Hello. I took the advice handed out here and got rid of a "slammer" wood insert I started out with. I just picked up a Jotul C450 Kennebec. It is stamped with manufacture date of 10/2005, and July 1990 EPA emissions compliance. Question- have the standards been updated since July 1990? We have burn restrictions in my area, and some days are limited to EPA certified wood burning appliances. reading lots of good things about this unit, hope have a nice burn it it soon. It's got to be better than the open fireplace for smoke, I would think. Also looking for info on how to install it, i don't understand how to remove damper, or demo smoke shelf. I have tools and lots of building work experience. I could probably handle it with the right info. Thank you