This is my solution for tuning slides that slide out when you're playing, it's cheaper than getting a repair man to fix the slide. It isn't meant to be used on the 1st or 3rd slide. Get some pure beeswax and petroleum jelly and slowly melt them in a saucepan, do not boil, allow to cool down and check for viscosity. You are looking for something that is stiffer than the slide grease you're already using. Sorry there are no precise measures but I figure you can work it out, make small amounts at first till you're satisfied with the result. The stiffest it can be is the consistency of the beeswax, you don't want that, you might get a fright when you adjust the main tuning slide and think that it is stuck. By diluting with petroleum jelly you are making it less sticky and the slide will move but only when you want it to. It does no damage at all to the brass and cleans off with warm soapy water. I hope this may be of use to someone.