Hi friends, hope all is well. I wanted to ask about finding the best possible replacement lower joint for a Leblanc VSP (all wood 7820 model, s/n D54xxx and has the thinner "swoop" style C#/G# key, and the throat A key is more centered on the hinge tube, not offset like other VSP's I've seen; also the logos are engraved deeper into the wood than a newer VSP that I've seen). I've lost the lower joint (long story) and would like to replace it as best I can. The upper joint measures about 15mm up top and around 14.8mm lower end. I've tried a few already that fit, but didn't play/sound/respond right: Leblanc Esprit, Leblanc LL's (vintage 1966 and 1983), and (surprisingly) a friend's newer VSP.  Any suggestions? Thanks, JC.