Had 3 flights this weekend.
Starting is a lot better crank it over at full throttle for 10 seconds and its all wet, not like before a couple of minutes before fuel was up.
Glow and a quick hit and its away. Idle is a lot better much higher than before. top end still the same with no adjustment.
Changed the clunk to the YS one.
And put some baffling in the cowl. I think alot of the air was going straight under the engine and out the bottom not cooling anything.

Thanks for your help good to bounce ideas of another person.
Your help is invaluable.

thanks Dave

Lawrie