I have replaced the ignition excluding the coils. Spark jumps a 1/4" gap nicely with a good snap. I have completely disassembled the carb and cleaned thoroughly paying close attention to the orfices and low speed circuit. I can not get it to run smoothly at a very low idle. I started with the slow speed needle backed out 1-1/2 turns,and it started on the first pull this morning at the lake after running in a barrel yesterday. I let it warm up for 4-5 minutes and trolled out to adjust the needle.The adjustments seemed to have no effect even after turning it in 1 full turn in,albeit at a speed which was to fast for trolling just to keep it alive.I ran it WOT for about 5 minutes and tried again.I had my timing light with me so I shot it and it fires just before the mark probably 3/32' before,exactly the same on both cyls. A couple things I noticed: the head never became the slightest bit warm and the water exiting the exaust relief port was not even slightly warm either.Also at mid throttle it was not quite as smooth as WOT or low idle(as low as I could get anyway). Timing was the same at all speeds. I am confident in the ignition work and the carb work,if the Tstat was missing or stuck open would that affect the low speed tuning? Thanks ,I know its a long post but wanted to provide as much info as possible.-B