Just got this little Pioneer RA from my dad. It was the first chainsaw I ever used. Going to give it a thorough going over and clean. Dad says it ran well, but his best guess as to why it doesn't start now is that the diaphragm is probably shot. I'll start there. Wondering what the best source of parts is for vintage Tillotson HL-22A carb (I think that's what it is), as well as other part. Is there a supplier for the original spec bar?