Thank you Grumpy. I appreciate the detailed explanation.
Tonight I rotated the engine a little more past Top Dead Centre and got some much better results with the feeler gauge.
Here goes:
Inlet - .08mm goes through easily and .09mm has to be forced through the gap
Exhaust - .20mm fits easily and .25mm has to be forced through the gap.
So from your detailed explation I gather this engine would be better left untouched unless I am mistaken. I do have to find some long grass to really test it on.
I will await your thoughts.
thank you
