Not rough in the classic sense, like it wants to stall rough, more like it wants to jump and lurch when I'm at a stop. Kinda weird. I really don't know how to describe it.
finding an airleak spray some light oil (penetrating oil /diesel?) around the carb a bit at the time and look when the truck starts to stumble give smoke or raise in rpm thats the spot you need to look at closer
take some carb cleaner and spray it all around the carb and intake allmost 100% its and vacum leak dose yours have hydro bost dude?? if not cheak that line allso the pvc will get ya allso
erik
ps i got my demon carb to day woo hoo even more power and less fuel
I've also heard you can use one of those little propane torches. You just open the valve don't lite it and when the motor sucks in the propane it will run better.