So I have now removed and dismantled the valve body from the transmission, after having had to drill and extract one stubborn bolt from the 10 holding the body. As the Tork heads of a couple others are slightly damaged, to be on the safe side I ordered ten new bolts at the local MB dealer.

To finish the reconditioning, I'm just waiting for the two Sonnax kits Overlap Control Valve Sleeve and Regulating Pressure Control Valve Spring which are on the way over from the USA.

Regarding the ATF, what is the easiest method to flush out ALL the fluid (torque convertor and pipes to/from oil cooler, etc.) from the transmission? I have plenty of Fuchs Titan 3353 Dexron III in reserve.