Originally Posted by
Berthos
The face of the cork on the water keys is way off being parallel with the face of the holes. Consequently, the seal created by the cork is poor.
I have a Wessex French C tuba and actually the water keys on slides 1 and 3 are badly designed (the one on the main slide is OK). To remedy the problem it is sufficient to shape the cork stopper (from the part inserted in the key in order to restore the parallelism). There are rubber grommets on the keys, but the one on the third slide was lost, probably after I stretched it to get a two step lower instead of the conventional one and a half.
Last edited by franz; 11-03-2022 at 05:05 AM.
2007 Besson Prestige 2052, 3D+ K&G mouthpiece; JP373 baritone, 4B modified K&G mouthpiece; Bach 42GO trombone, T4C K&G mouthpiece; 1973 Besson New Standard 3 compensated valves, 3D+ K&G modified mouthpiece; Wessex French C tuba, 3D+ K&G modified mouthpiece.