2101xp

Hey everybody, first post, thank you all for all of the information I have learned here so far. I just bought this Husky 2101, is this spot on the piston the start of a problem, or nothing, what do you think...

Faced with the problem of a missing pawl on a SEM flywheel. Only the spring and pawl being still available as replacement parts. The stud is nla. Figured I would see what else could be found to make it work again. Dug through my bolt bin and found what I believe is a stud from a 2 series of saw...