In an earlier post, I reported I had a transformer that the current was not stable on the right channel. My research strongly suggests a loose internal connection (outside connections are tight). Also swapping to another transformer corrected the problem and then hooking up the one in question the problem returned.
Question is there anything I should be aware of in opening up the transformer to check for loose internal connection? Also, the handles on this transformer seem much looser than the other Z4000s; I don't see any adjustments to be able to tighten that. Do some of the early makes not have adjustment?