Can somebody help me out with setting up the Kahler on this Fender HM “Strat”

I picked up a late 1980’s HM Strat recently and I need to know how to setup the Kahler tremolo. I don’t have any experience with these and I’m a little confused about the operation of it. I need to retring the guitar and I’d like to go ahead and partially disassemble it so that I can clean it up and get the Kahler working properly.



Looking at the mechanics from the back, there is a sliding arm (B) and a pivoting arm (A). When the pivot arm is the up position, arm “B” can slide laterally. When in the down position arm “B” is locked. I assume that this mechanism is intended to allow you to lock the tremolo in a fixed position, however it doesn’t positively engage with the tremolo block (C). There is a “V” notch (D) in the sliding arm, but it doesn’t seem to engage with anything. There are a number of adjustment screws as well. As it is, if I use the tremolo, the tuning goes out of whack because the block partially engages with the sliding arm and keeps it from going back to its original position. Currently I have the springs cranked down and the tremolo blocked, but I’d like to be able to use the tremolo as it was intended. What am I missing here? All help is appreciated.

 

Actually, from what I can gather, its a Kahler Spyder.

 

Into the parts drawer it goes. Thanks!