i had a problem with an 034 piston kit, having the wrong thickness of wrist pin clips. I could slide the wrist pin through the clips when installed. I called and got a new one. Received the new one and still have the same problem. Seems like the wrist pin groove is too deep. The clip only fills the groove and does not hold the wrist pin in. I have one very upset customer because the first time his wrist pin slid out and scored the cylinder, and I was the one who said baileys piston kits were great and that I could fix the saw for cheaper than buying a stihl kit and everything would be up to par because they are a great company. Now i'm two kits in and both have the same problem.
i brought the kit to a machine shop and he said no way are they right and also agreed that the groove was too deep.