[6pack] DOT5 Leak at reservoir

[Dave]

Hody Gents!

I am puzzled as to how better seal the brake fluid reservoir from leaking fluid (from the rear compartment only) onto the brake MC. I have removed the reservoir and all is clean. The square-shouldered washers, used to seal between the reservoir and MC seem to be in good shape and were properly seated. The four screws holding the reservoir to the MC were in place had been snugged down well. Anything I can do to 'enhance' the sealing properties of those sealing rings? 

Thank God it's DOT 5!!

Dave
CF25194U+AO+TBI