I have replaced the carb, coil pack, and plugs but engine still has an intermittent miss. The enginge ran great until recently and still run fairly well now, but this miss is driving me crazy. Could the valves be causing this problem or is it more of an electrical issue?
If anyone has an idea please share some wisdom,
Thanks,
G

The culprit appears to have been sticky valves. After running some seafoam through the engine for about an hour or so it has smoothed out completely.
Problem solved for now.