Still stalling after lay over, not brakes :(

[Kevin Hollis]

Darn! Ok, that's the back brake sorted but that wasn't the problem :(

Still dies when I try and pull away and get the clutch fully out.
Behaves fine at rest, choke is doing what you'd expect. All sounds fine, 
revs smoothly.
Sliding the clutch is fine,but when I release the clutch everything dies.

Any ideas?

Is there a sensor that would allow me to put it in gear but not to pull 
away ?

Help !?!

Kevin