Was wondering if people think I would have any draft issues? I really want to make the upgrade but another user mentioned this and I wanted to check with what people think? Thanks a lot in advance! People also mentioned when buying used to make sure the grates or anything else inside isn't warped or has any hairline cracks...also check back of stove....I guess grates can get warped if people open up the ash pan to vent the stove during initial startup...which overheats it and warps grates....basically to vacumm inside with a shopvac and look inside with a flashlight...any other advice....I assume the F600's haven't changed at all from 2006 to 2011 really??? any changes in dimensions or anything besides colors? I understand they are all cb and non cat from 2006 on at least? anyone know when they changed?