5th valve addition

[Bnich93]

If you wanted a 5 valve horn then why not buy a 5 valve horn? What will happen if you add a 5th to that horn most likely is that you will have spent $10k on something that you might be able to sell for $6k after the mod. Really think about it and play the horn for a while before you chop it up.

[kontrabasstuba]

Ask directly Peter Hirsbrunner. He want's to see the Horn and he will ship the parts to you.
So your repairman has a easy job. I made it in the last year...
http://www.hirsbrunner.com" target="_blank
Or ask Adams in Thorn/Netherland. He made allthought same parts...