I just scored one of these cylinder and piston kits on eBay for my Stihl 024. I gotthe saw free a couple years ago and it never ran right and finally stuck a piston (leaking impulse hose). So I fixed it using the old piston with a new ring, rebuilt the carb, new rubber parts, gaskets, etc. Now the saw starts and runs perfectly and I like it a LOT for limbing poles and doing construction cutting. But it does smoke on startup and doesn't have all the power I think it should have. So when I spotted these Stihl cylinder and piston kits on eBay for $50 I snapped one up. Hope it fits okay. Anyone buys one of these kits? There are a lot of them offered on eBay. I assume they are aftermarket items and not Stihl made. Correct? What I can't figure out is this. The piston does NOT come with a piston pin! I never heard of such a thing. Every new piston I have ever seen or bought includes a new matching pin. But these do not. Being the cheapskate that I am, I would like to just drop the old pin and bearing in, but I know I should get new ones and probably will. OTOH, if the old pin doesn't show any wear, what is the harm of using it?