Well I frustratingly and disappointingly give up. Engine is going to go back to horizon. It went from running poorly, to not starting to now not even getting a spark. If this was a used engine I'd chalk it up to something screwed up by the previous owner but while I am the second owner it is a new engine.
I cleaned the carb, plug gaps are right, air gap is right, tried bypassing the kill switch, new gas, everything set as per suggestions and manual and it's gone from poor run to weak spark and won't start to no spark at all. Everyone tells me how great these engines are and how reliable but so far I'm pretty let down. When it's new I don't expect to have to spend extra money on it but it's warranty is up based on time already. The fellow I bought it from has offered to split the repair cost with me which I appreciate. Hope the turn around will be quick on it.