Just a short note to say thank you very much for the Ultra Pure Valve Oil.
It hasn't completely cured the problem, (I'll be sending the horn to Zig
Kanstul to Nickel Plate the valves), BUT it has made a huge improvement.

I would estimate that the pistons are now performing about 75% better than
they were and this has increased my enjoyment of playing immeasurably. It is
without a doubt the best valve oil I have ever used. I will be telling
everyone I know about it, especially if they are brass players!

Rating: [5 of 5 Stars!]