It's the stock clutch that came with the gt6 engine kit from gasbike. I removed the spring as I thought the same. Haven't really driven too much so maybe just needs to wear it in some more. ive been using the engine clutch stand off adjustment as well when I run out on lever. I have the dullar/dellorto carb on now but seems way rich. Idles fine, takes off fine but then bogs bad, have to hold it and then sometimes clears up and goes, especially if you rev it up some. I guess burning up the extra fuel. Otherwise it eventually just dies and plug is all wet. I do have the stock carb as well and needle is in middle. Moving it up is leaner I think. I was going to go buy some lower jets tomorrow but wondering if I should just throw the stock one on, get it running, break iti to n and then mess with all the fine tuning I.e. New carb, jetting, right plug as weather is starting to get warmer/hot soon and mess with jaguar CDI settings.
THanks
Mike