hi guys im a new user here. ive used this site alot but never posted. im trying to figure out a miss ive been having. i have mildly built chevy 350 in my cutlass. its a 397010 4 bolt. bored .60 over. flat top pistons, all clevite bearings, 882 heads 1.94 1.60 valves. .500 lift flat tappet cam, holley contender high rise dual plane intake with a holley street avenger 670 carb. im running an accel distrubutor with the guts taken out to accomodate the msd box im running. producing about 10.5/1 compression. i have the lightest advance curves springs on the distributor. im running accel shorty plugs at .45 gap and msd super conductor wires. this was all built 2 months ago. my problem is while cruising down the road i have a miss. it goes away when push or let off the throttle. it idles great. ive checked all the plug connections, none of the wires are touching. im thinking it may be a lean issue from the carb. ive heard the street avengers run lean. any ideas and any info and feedback would be great.