Greetings folks. As is the case with my collection of sub $100 trumpets, I have accumulated some instruments that I attempted my own pad job on (a Bundy) or another high end alto a Selmer that simply won't play especially into the upper octaves. I do not wat to spend a pile of money on these or take it to a tech who will then take me to the cleaners. I am such a novice, with no mentor available, that I do not know how to trouble shoot the problem. I'm sure my problem is solvable via adjustments that would be simple for a pro or a tech but I know nothing about. Are there any links out there for doing these diagnostics and repairs ? People keep telling me go look on Youtube but I haven't found any videos at all.