In a attempt NOT to dredge up a old thread that went bad I decided to start a new one on a fresh,upbeat platform. I reported that I had a new Kanstul KSB102 power bore soprano that had sticky valves and explained that I knew it was because of the break in process. As hard as I have tried to keep it clean,flush it and oil the valves,the first and 3 rd valve kept giving me the occasional sticky syndrome.The first two valves have broken in nicely and the third is still a little on the stiff side but even it is smoothing up. Each time I changed valve oils I cleaned the instrument thoughorly and then used the new oil.Still with the same results. Low and behold I finally decided to Give Jack a call and ordered a bottle of the Hybrid pro-oil 141-a7 that he recommended on the other thread.After cleaning the horn again and using this oil I am starting to see some forward progress.These valves seem to be almost completely worn in after playing it for almost 2 months solid almost 3 hours a day.They are getting smooth and responsive. I am hoping in a short period of time they will glide like the Bach valves do on my two BAch 43's but after talking to other Bach and Kanstul owners it seems that Bach and Kanstul have two entirely different valve feels too them.Bach's seem to be the smoothest but at a cost.They seem to be a bit more noisy.Kanstul on the other hand seem to be quite and responsive but not the "glide" like smoothness of the Bach's. This of course could change in the next coming weeks and I promise to keep updates that are accurate and unbiased.