I did not have any trouble installing the linkage on my setup. However, I re-routed the heater hose the the fender well to get it away from the carb linkage. My linkage did lightly rub the hose when it was under the carbs. I used the stock linkage rod from the linkage arm to the carbs as it worked better than the one that came with the kit. I also replaced the stock air cleaner with two K&N's but I really doubt that had any significant affect other than they looked and sounded "cool".

Just for reference, here was the jetting on my Webers as done by the local "Weber Expert". As a side note, he also had a 250C with Webers.

Mains (Pri) 127 (Sec) 130
Air Corr (Pri) 170 (Sec) 175

Idle (S) - 50
(L) - 50

As I stated in my original post that you quoted, my setup always ran a little rich at idle but I never really had a problem with it. NGK BP5ES plugs worked the best.

Hope you get yours sorted.

Dan

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Dan Taylor/ Tulsa, OK MBCA
'84 300D/'90 Jaguar XJ6/XJ40