Re: Compression too high.
The trick to it is not trying to do a complete revolution of the pedals but rather a back /forth, so like up and down, focusing the down/start stroke to your kicking leg.
or like I did put a decomp valve in the head,
best solution though is the pullstart.
I was running 150 psi with the decomp valve,
But have dropped it to 125 Psi now.
Have a look at my Softtail.