Anybody ever have a leak in the hydraulic clutch seal near the firewall? It appears that the seal is wet and the master (clutch of course) cylinder level goes down pretty quick, even when the truck just sits. I have some books, not many, and searched here of course. What is the seal called and where can I find the procedure to fix? Any help would be greatly appreciated. There doesn't appear to be any visible leaks elsewhere. Thanks in advance!