Hi, im new to the forum, good to know there's so much info & help available on forums like this, esp for beginners like myself. Have a cw 50 spy, I want to get a 70cc kit soon, just like to know how I can tell if my cranks in ok nick or not, if it needs replacing?(not that I'd be doing that job myself) the bike seems to be running fine rite now. Cheers
