From Scott's current inventory of parts. The measurements of total stack height for these odd pairings are from my bench to yours, so the calcs are starting points for anyone wrenching their own.
(http://deserthunter.com/images/article-photos/fishing/ClutchSpring3050s.jpg)
Disassemble.... assemble.... test.... cuss.... repeat. 50VSX is ()(). What if it's ()()??
A better collection of belleville parts in list format:
http://alantani.com/index.php?topic=10116.msg95636#msg95636
It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so. -Mark Twain