a litte "update " .... when I installed the FRDS I found 4 screws with "allenhead" and 2 screws with "hexhead" in the hardware package.. so far so good. Installed all the stuff i the way shown on the directions. Last week I had to pull the DS... and had to cut one of these HEXHEAD screws, went to a local hardware store a new one- which was a little longer. no problem I thought..will cut off a little. Before cutting a piece I "stole " the kitchen balance from my wife... just to make sure that the weight of the screws will match at the end of the day.
What I found out next was ... that the HEX Screws with the special head ( like a washer ) DO NOT FIT COMPLETLY flush on the flange...because the flange is like 1 mm smaller than the Support that is mounted on the pinion. So the HEX SCREWS are "useless", as the cannot be tighten until they keep in good contact with the CUP /Support that sits on the pinion.
So I decided not to use these HEXHEAD Scews... and I went to the Hardware Store again.Bought 2 more "Allenhead"screws..
Back home , I checked the weight of all those screws...
Surprise surprise... the 4 allenhead screws are 26 gramms (each) exactly ...But he Hexhead screws are 33 grams ! each. Thinking about balancing I bought 2 more "allenhead" screws with 26 grams... Now I use 6 allenhead screws. All with the same weight.
Result... in my opinion , the car runs even better now... smoother. No vibs up to 125 mph ( here in Germany we don´t have a speed limit, so I could make some d
test drives- without canceling my DL.
OBS. for the two "allenheads " that I changed out for the hexheads.... I used to cut a allen wrench a little... because the gap between flange and the yoke is to small to use the "long tool "...