i recently got a deal on a few pellet stoves. was able to buy 3 englanders 25-pdv and one 49-shctm or 10-cm says both on the cover. the 25 pdv can hold 60 lbs vrs the other which holds 50 pellets or 60 corn. the 25pdv says max btus is 24k (in that range) and the other is 31k. i want to put the 25 in my house because it will hold more. but the other is rated for more btu. looking for input on that. also i was thinking of putting on out in my garage. i currently burn wood have the stove on the back wall with 6in pipe straight up. would it be fine to adapt the 3in pipe to vent rite out my 6in i have? any advice input would be great.