I would take it to a reputable shop after you do a leak down test. Then once you figure out what the problem is (with plenty if pictures) you March right over to that hole in the wall shop and ask them to pay the bill.
I have a friend... Sorry, ACQUAINTANCE who consistently takes his bikes to the small shaops to save money, and he consistently ends up with more problems than he started with.
I have a friend... Sorry, ACQUAINTANCE who consistently takes his bikes to the small shaops to save money, and he consistently ends up with more problems than he started with.