crowmadic

Richard,
I'm finding that Ken's suggestion works for my otherwise two troubled horns. His instructions to me for my sticky valves was to put one drop and smear it over the valve with my fingers to thin the dose out. This along with stretching the springs SLIGHTLY has taken care of my problem. Keep in mind my situation deals with 2 well used horns from the 70s. I have another well used old horn that does fine with a couple of drops, and a slight turn (which I understand could be a bad thing to do). I might stop doing that and buy my next supply of UP oil in the spray bottle. I can't imagine using any more than a drop or two for any horn, but as usual with trumpet standards "there are none" (except in the science that applies to building them...I guess?)........tom