Hey was lookin ta see if I could get some info on my softail deuce , it's a 2001 88 cube carberator , it has cams and a muconi carb, stock air filter and slip on exhaust, I don't notch about a carberator bike, but the 2 things that I feel shouldent be happening is 

the bike only sometimes back fires put of the carb? Is that normal?

and the other is once I start my bike when I first go to ride it it start perfect idles well but once I have let it warm up for 5 min I hop on ta start riding and for the first 4 min of riding there is hardly no power to the bike and then all of a sudden it kicks in and is fast and takes of well and then is fine for the rest if my ride, once I turn it of an hope back on within a short time it's still goes good , but if I leave it long and hope on ta go again it's slow again till it like warms up, is this normal please help