I have a '93 CC gasser that seems to not start quite right. If you press on the accelerator, the starting motor whines (seems like belt is slipping). If I release, then re-press the accelerator, then it will fire and go. Sometimes, when it fires, it BackFires!. Then it goes. This scenario is getting to be very common.
I haven't actually checked the belt (it was new not long ago), so it could have stretched a bit. But if there is something else I should check, let me know.