Saxophones Which is the better Alto choice: Couesnon Monopole II or Hammerschmidt Klingson?

[PigSquealer]

When I purchased the horn last year, the previous owner had re-padded it. So that's what he went with. If that's what the horn originally came with, I am uncertain.

Some technicians use the tonehole diameter minus 5mm for booster size. Some use minus 10mm for clearance.

Conn 6M & 10m used flat metal to size of pad.
0-15mm nothing

16-19mm, rivet

19.5-21mm, 3/8”

21.5-31mm, 1/2”

31.5-37mm, 9/16”

37.5-51mm, 3/4”

I use a mix. Study what came out if not original. The players comments. What’s going back in and what sizes are available for the choice.
Make a chart and do the math. Below, 22 boosters averaged 5.6mm clearance.