TubaTinker wrote:If that's a 4J cluster... have Harv double-check the pitch if you want to use it in place of a 1-3 combination. Most of the 4J's I've seen are horribly flat on the fourth valve circuit. It's a piece of cake to fix and can be a pain in the butt if it's flat.
It may not be that easy to just paste the 4 valve cluster directly onto the helicon without redirecting (some of) the 4th valve circuit. It can be an advantage to have 4th valve longer which gives better intonation on 2-4 ,and 1-4.
Harv can make it (to taste) however Mr. Schlepporello wants it.










