dommie cdi
 

having probs with my cdi,if i touch it the bike stops have double checked all connections,any ideas

It sounds like you probably need a replacement. I know they're not cheap.

If you're into electronics, you could follow the instructions here to try building your own:

http://perso.wanadoo.fr/transmic/gbindex.htm

If you did need to get another cdi unit ho could try David Silvers.I think its around £59.
http://www.davidsilverspares.co.uk/