My 612 Bullet (not sure of the CR) is easy to start if you use the de compressor.
Kick just over TDC on copmpression until ammeter needle zeros (points open)
Kick start back to top of stroke
Kick like you want it to start
Generally starts 1st or 2nd kick - no fuss no dramas.
Try it without the decomp, or just kicking it into life and probably will not be able to and you will probably get a good kicking.