RE: ZDZ 80 Hard to start
Finally got mine(ZDZ80) going using the 5/5/1 method after I didn't flip it but 2 times the first start. First time it popped and died probably because I didn't get enough prime, then I played with the choke til it stated(just a few more flips really). 2nd flight I used 5 flips instead of the recommended two from the previous owner and it started as advertised. Engine is tuned right I just have to get the routine down. It ran well in the air with a 26x10. Not as powerful as the 3w85 but way more than adequate for the plane. I might be comparing apples and oranges too. The Super80 might be the equal of the 3W.
My 3W-85 can be finicky when it is warm. Sometimes one flip will restart it and other times it is better to wait a bit and let it cool off. The 5/5/1 is really only a few more flips than the usual "choke and pop" method. Even after the 3W pops it is still 4-5 flips with the choke off. Total time spent is about the same.