You have this in a 116 car? You should go for the simple system used there.

The reason I posted the article is you don't stand a chance of intelligently fixing/adjusting this system without a knowledge of how it works and a vacuum gauge.

The 116 car had the simplest of the systems. Basically a line runns from a huge constant vacuum source through an ORIFACE to the trans modulator. If this was all there was the modulator would see 20in of vacuum all the time.

The purpose of the oriface is to allow the vacuum beyond the oriface to be modified by a proportioned leak. The leak gets bigger in proportion to the throttle movement. So be sure the brake booster line outlet still has the oriface built in (not reamed out) and run a line to the trans. Now tee off a line to the proportioned leak (see the artcicle for the position). Now hook a gauge to the line such that it reads what the trans sees and you should have 10-15in at idle and 2-0 when full throttle.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician