Gearing up for my next project with the D, I need to tackle my brakes. And I'm currently examining the Brake Master Cylinder. Without a doubt, I'd like to just replace the unit entirely. Especially since the Clutch M/C had been improperly repaired, and had "booger welds" on the connecting rod. This past history of improper maintenance from an incompetent owner always makes me leary, hence the need to replace everything. However, I have a bit of a unique situation with mine. My system is tight, and has no leaks what so ever. Except in the winter. When my car sits in cold temperatures for more than a day, I will develope a steady leak from the M/C but not inside the car, nor on the connecting lines. Tracing everything back, The leak is occuring between the M/C, and the reservoir, at a rate where my warning light will trip about every 2 weeks or so depending upon use. It's as if the cold contracts the rubber, reservoir seals to allow the leak. Now looking into this, I'd like to replace the M/C, and I see that all vendors sell the M/C unit either with, or without the reservoir. But none appear to sell the reservoir by itself, nor do they sell the rubber seals for the reservoir. The two seals are pictured in the Parts Catalogue, but do not have an specific part #'s listed for them. They're just listed as a part of the reservoir kit, that one one sells. And this was confirmed some time ago when I spoke with DMC Joe about it. My reservoir appears to be in good shape, except it is a bit yellowed. And that to me isn't enough to warrant replacing it. But since all rubber seals do wear out with time, but you can't buy these two particular seals individually, then why do the vendors even bother to sell units w/o reservoirs that may require them? Has anyone else ever had this problem? Or am I looking at yet another unique problem with my car, due to the fact that this component too fell victim to a history of improper repairs? -Robert vin 6585 "X"