I did have a couple of loose solder joints on my Wessex Champion within the first year of use. I think this is pretty much a "feature" of a lot of Chinese manufacturing and "quality control." I also had an issue with the threading of a valve/valve-cap. Again, I see these as broad Chinese fabrication and Chinese quality control issues. I fixed all the issues myself (resoldering joints, etc.). I've seen comparable quality issues (such as quality of brass and valve/cap threading on other non-Wessex Chinese horns I have. Recently, I've bought some mid-level (in terms of quality/cost) Chinese optics, and the quality there seems to be very good. There's an evolutionary process going on here -- similar, I think, to that of Japanese quality after WWII.
I have been told -- by a very well known and competent tuba tech and rebuilder -- that such issues are not confined to Chinese instruments but are a consequence of machine-soldering techniques being broadly used today in brass instrument construction. For "unusual" instruments (i.e., relatively low sales volume), I wouldn't be surprised if the incidence of such problems is higher.
Gary Merrill
Wessex EEb Bass tuba (PT-63)
Mack Brass Compensating Euph (DE N106, Euph J, J9 euph)
Amati Oval Euph (DE N106, Euph J, J6 euph)
1924 Buescher 3-valve Eb tuba (with std US receiver), Kellyberg
Schiller American Heritage 7B clone bass trombone (DE LB K/K9/112 Lexan, Brass Ark MV50R)
1947 Olds "Standard" trombone (Olds #3)
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