just got a killer keg from pappy. its a great looking osage tube. not only looks great but sounds as good. I have used tubes for several years with great results. never used one any finer than this one. I do have a question. I have always gotten pretty , clear yelps from all of the tubes I have ever ran , but I cant seem to find that has a raspy backend. when I loosen the latex slightly , the yelp just falls kind of dead. what is the secret of getting a medium rasp out of a tube call?