St. Croix York, not enough heat??

I can only compare the way your York insert runs compared to my York insert and on mine the #5 setting, with the draft knob set about a 1/4" from the right, the flames are between halfway and all the way to the top of the back brick and about 1/2 to 2/3 of the firebrick wide. The fire just needs air and fuel. If you have enough air, then your not getting enough pellets. I had mentioned the auger light cycles every 7 or 8 seconds and while idling the auger light stays ON for about 1 second , but as you advance in heat level the auger light stays ON longer. On level 3, my auger light stays ON for 3 or 4 seconds compared to 1 second on level 1. Level 5 would have the auger light on even longer. If your absolutely sure your getting enough air than you have to make sure your getting enough pellets dropped in the pot to increase the heat output.
Just my 2cents. Let us know what you find.
P.S. My stove came from the factory with insulation stuck inside the heat exchanger tubes. Must have been sucked in the ciculation fan during a pre-run at the factory. I had to use my vacumn with a small rubber hose to suck the insulation out. This wouldn't affect how the fire burns, just the heat output thru the exchange tubes in my stove.

JB, You're not alone. We've had our York insert for a month and have shut it off at this point because of poor output. Your orig question (with room size and temp readings) are identical to my situation. The dealer will get a visit from me today and will have one week to fix or remove it. It was a lot of money wasted, in my opinion. Nothing is clogged, and I cleaned it once a week. I'm also calling Evertemp today as well and will post what they tell me.

Went to the dealer today who tried to talk their way out of even the POSSIBILITY that the stove may have something wrong with it, although, the owner wasn't there. The guy who was mentioned "charging for a service call". Not gonna happen.
When it was originally installed this October, it was almost a week before they could figure out why it wouldn't run, but 1 visit to the place we got it from (talked to the owner) resulted in immediate service and they got it running.
I look forward to talking with him tomorrow...
Eventemp, however wouldn't even talk to me, not even giving me specs on how many square feet it was supposed to heat (1800?) and kept telling me talk to the dealer, talk to the dealer, etc. Great cust. service from the manufacturer...