26-07-2018, 11:03 AM
...well. I appear to have located the issue. Emulsion block. I have lapped the block to the body and made my own gasket and the issue has disappeared and the idle screw now alters the engine note. It would appear that despite being gnarled the progression jet still functions.
Thanks for everyones help. I hope my solution may assist someone else in the future.
Cheers
Dave
Thanks for everyones help. I hope my solution may assist someone else in the future.
Cheers
Dave