I am concerned about threads which come up from time to time talking about problems with manufacturers/repairers/teachers etc. where there is no mention of any discussion with the supplier/manufacturer to resolve the issue. The latest one concerns a trim kit negatively affecting the alignment of the valves. Misunderstandings and mistakes happen all the time. A test of a company is how well there are able to fix these. I would be very upset if someone came to this forum to complain about issues with my instruments if I had not first been given a chance to address them. If you bought a car which had problems, wouldn't you go to the dealership first? It would be great to read descriptions in this forum of how issues were resolved.