The past few days I've been testing out various combinations of reeds, ligatures and ligature positions in order to figure out why I'm squeaking on my V5 A27. And today, I had a go with a Hahn #2.5. It did not squeak at all, although oddly it had an unexpected side effect of being quite flat? Very obvious when doing my mouthpiece exercises.
On the usual position on the crook, the mouthpiece played very very flat, like 40+ cents flat, I'd never seen that before! Pushing in the mouthpiece till the very edge of the cork seemingly fixed it, and a positive side effect is that middle d is now _only_ 20 cents sharp! Wow!
Would the Hahn be my cure?
I decided to try other synthetics. Fibracell. Other legeres.
Not. A. Squeak.