Newby looking for advice. 20+years w/tenor, high school-college and beyond. Tenor is H-couf Superba I with Couf 8* mouthpiece. Never an issue with the horn. THe band I'm playing with needed a new alto player. Took my son's horn, Rampone & Caz Jazz 1 silver w/Meyer Teney 6M mouthpiece. Every once in a while I'll get a "squeek". Am i overblowing the horn? Need a harder reed? Never had this issue w/tenor. I'm playing the alto @ 15 hours/week for the past 8 months. Looking for advice. Thanks!