I recently bought a Selmer Paris 1905 Sigma. I am having trouble with the main tuning slide leaking water. The Sigma tuning slide surfaces were polished and finished unlike the raw brass that I have on my other horns. The slides worked smoothly but seemed to be a looser fit than other horns. Are my Sigma slides typical for Selmer Paris trumpets or I do I have a lemon?
I have tried Giardinelli, Superslick and Hetman 5 tuning slide lubricants but they all leaked eventually. Hetman 7.5 worked the best. Can anyone recommend a tuning slide lubricant that would work better than what I have tried? Thanks, Jim