About a year ago i bought a brand new Bach Stradivarius Custom 180S for around $3100. Needless to say, this is the worst purchase I have made in many years. The valves in this horn are horrible. Constant sticking regardless of amount of cleaning and re-oiling. I've tried a little oil, a medium amount of oil and a lot of oil, to no avail. I initially sent the horn back to the factory because of this issue and when it came back, it wasn't any better. Just wondering if anyone else has similar problems. I will not purchase another Bach, ever. My Yamaha flugelhorn valves are perfect, always. Very little maintenance and always performs well. Comments? Suggestions?