Posted by js on April 13, 2002 at 08:16:49:
In Reply to: Lighter Rotor Springs posted by Ian Easton on April 13, 2002 at 08:13:36:
Miraphone springs are usually fairly light (easily adjustable from "light" to "heavy") and fit many tubas. However, if you're careful with a small torch, you can weaken your existing springs with heat. (Heat a little, let cool, try, etc.)