Bought a brand new Yamaha Neo Euphonium about 2 months ago. The first valve has a slide which is at 90 degrees to the valve casing. On removing the slide you can see that the ports are out of line by about a 1/16" (1.5mm). The valve isn't travelling far enough to line up. I am assuming that the other 2 valves are of a similar nature but as yet havn't the equipment to check this out. Is this acceptable with a new instrument should I wait for it to bed in more. Call the supplier. Adjust things myself? Any advice please.