This may be the best info. yet on these tops short of the factory service manual. Enjoy:
Scissor Top Troubles
For all its mystique, the GM scissor top is a surprisingly simple assembly, ... The scissor-top mechanism on full-size GM convertibles was used, ...
www.remaker.com/caddy/scissortop.html - 24k

 

excellent site. It is finally a site worthwhile on information. Thaks for the link.

 

Hmmmmmmm, if only they were as simple as it sounds in that site's page. There are some specialized brass bushings that wear out and the pins. Side transmissions/timeing of each side, yada, yada. When I "dragged" my Royal 88 of a hill-top in Pa. the top didn't work and someone must have tried forcing it down. I had to replace a lot of parts to get it working good before I replaced the top. Plus you have to find the spring loaded arms that go in the trunk if u put a glass window in the help "fold" the window into the well. When I "start" to put mine down I stop it half-way to make sure the rear glass window is folding flat/properly before putting the top all the way down, going up they say to "always" latch the pass-side first making sure alinement pins are right. Mine runs smooth now. I do have two extra assemblies that I have "robbed" parts off of one. Once you get them right they work good. The problems start when someone has a problem and thinks they can force them down. Just my opinion, Ken