As I posted earlier, my new Xeno valves stuck after a few weeks of non use. These valves are obviously not broken in as yet. I use Ultrapure on them when I am playing the horn. I loosened the pistons with some more oil but only cleaned them with a lint free rag. I re oiled and the next day the first valve showed signs of sticking again. So..... 1) Do I need to bathe the horn when I have left it for a while? 2) Do I use Alisyn on the casings and pistons then re oil? 3) Do I do both of the above? 4) Should I just play the horn every day?