i am not too sure what the deal is here, but when first start my truck it misses spits sputters and idles like it has a huge cam... not to mention smokes a decent ammount. but after 3 or 4 minutes the idle smooths out and the truck runs like a top. no smoke no problems. the engine is a tbi 350 out of an 89 with 120,000 miles on it. all stock except for a high flow oil pump and new valve seals. the computer was messed up so i just converted it to carb... the only carb i had was a mid 80's q jet (many electrical connections not hooked up) choke and secondaires both work. ?could i be having a problem due to not needing the electrical stuff since my truck is a 78?? any help please!!!