I recently purchased a 60's Lacquer JM from Chicago Music Exchange and I really like it but not too thrilled with the stock trem unit. It doesn't fall out or anything, in fact its a little stiff, but it makes a " clanking " noise if I use it in both directions ( up and down ) that is annoying. I've got it in as far as it will go, but it doesn't seem to " lock " in with a definite click. Is this normal ? I'm a bass player by trade, and the JM is just a fun guitar for me, not going to gig with it at all. Is there a drop in after market trem unit that would work smoother/quieter for this model JM ? Also, what is a good gauge string to use for the JM, and should I go old school with flats for that authentic Ventures tone ? Any help, tips etc. much appreciated.