Yes, the little arm that makes the injectors squeal, press it for a few seconds till the whine evens out, crank and voila the car starts on the first crank.
A quick internet search found this today:
BOSCH FUEL DISTRIBUTOR DIAPHRAGM FOR 6 CYLNDER ENGINES | eBay
At $29 it may be worth a try? I'm not sure why PP doesn't stock the item as so many of us beg for fuel distributor rehab, and it may be different (but I doubt it, as my reading indicates CIS is CIS across many different cars, Volvo, Mercedes, Delorean, others)