Welcome to the Quad club, PelletGirl. Many many quad owners on this forum to help you along your way. A mantra on this forum is 'if there's no pictures it didn't happen'
so definitely post some pics of your no doubt beautiful enamel MV !
Is your pellet feed working correctly ? I forget that the MV's have the automatic pellet feed sensor system as my Quad model has a manual pellet feed gate adjustment. No separate air adjustment are available on Quads, which by design pull allot of air through the fire pot, assuming venting, door and fire pot seals integrity, and stove cleanliness are all up to speed.
Smells, as well as your lower heat output issues, could be from moisture / maybe mildew absorbed pellets left in your hopper. You may want to pull the old pellets out if you haven't burned them yet, just to get to the bottom of your hopper to make sure your auger isn't full of congealed sawdust and pellet fines. You may want to get a small mirror and a flashlight to shine up into the pellet chute from the fire box end to make sure the top end of the auger isn't partially obstructed with bridged or consolidated pellets, especially if the pellets that were left in there are longish (1" or more in avg length).
If your venting isn't taped on the outside at the vent junctions it could be smoke leakage, or the uncured silicone they might have used on the inside of the pipe, which should dissipate after the first few 'hot burns'. To check for smoke leakage turn the lights off in the room and use a flashlight to shine around the stove - vent connection as well as the pipe junctions to see if there are fine wisps of smoke leaking out when the pellets first start to ignite - when the stove produces the most amt of firebox smoke.
It is easy for foreign stuff to get inadvertently into the pellet hopper - pellet bag remnants, pellet mill production detritus (I found a chunk of a rubber and steal conveyor belt in one of my pellet bags once), so I closely watch as I'm dumping my pellets in *just in case*.
Though I would hope every business proprietor has the good intention to 'do their best, as they have it figured out', some business owners clearly have it figured out better than others. Unfortunately, your install experience seems to be the norm rather than the exception. Did your installer do a test burn to make sure everything was working OK before they left? Did they hit the high points of how to keep it clean? I'm guessing if you are having to troubleshoot your first burn via this forum, that they didn't. This is a great forum, but it shouldn't have to be a substitute for the dealer support you no doubt spent good money on for your stove and install. So be polite, but persistent in your reasonable request for troubleshooting support from your installer, while learning all you can about being an informed pellet burner.
All that said, read up all you can via your manual and how to videos. Here's a link to some great Quad produced how-to videos to supplement your stove manual. (broken link removed to http://www.quadrafire.com/Owner-Resources/Use-and-Care-Videos/Mt-Vernon-Pellet-Stove.aspx) . And using the forum search function in the upper right corner of the page, type in "Quadrafire Mount Vernon" or "Quad MV" and you will find dozens and dozens of posts to read up on about your stove operation and trouble shooting. You should include your stove brand and model in your title thread new topic postings as well so it catches the eye of other Quad and MV owners, who can often best help you.
For the steep learning curve process of pellet stove ownership and operation, your stove will no doubt become 'the cruel mistress' (or master in your case, I gather, from your Avatar log-in name), that it has for all of us when we first got our pellet stoves, and started on the long, sometimes frustrating, but also the self-sufficiently rewarding 'odyssey' of learning how to get your stove 'dialed in'. "It's the journey, not the destination". Happy burning, and post back if you have other comments or questions.