Tuckerbag: The throttle was closed for the most part, but I opened it toward the last few kicks to see if it made any significant difference. It didn't as far as I could see.
I will check the reeds for any visible sign of leakage, but not quite sure what you mean by carb blow back. How would I check this?
Andy: Thanks for the link, I thought I had found all the good threads on compression but I obviously missed this one.
Thanks for all your help guys. It is definitely appreciated.