Ok, so after an email from andy at skydragons my problem seems to be resolved. Quite simple realy just have to kick start it instead of pull start. Dont ask me why but it does not seem to kick back or have the feel of high compession on kickstart. I used to kick start it anyway , but just had some work done on it (snaped a bolt on flywheel) so thought i would start it by hand. It does not like it ,but loves a good kick up the arse!!
All seems fine , think i need to fly it now.
Thanks for your help guys