[October-1881]

I bought SPF # 967 used so I can't tell you which Tremac transmission I have. Here's the problem. A month ago I noticed when I shifted into 3rd, there was a grinding sound. Later that day (in 1st) it happened again. In both cases I pushed the clutch in and took it out of gear to remedy the problem and it didn't happen again. Today while just lunking along in town, I shifted into 3rd and when I pushed the shifter all the way forward I get the grinding sound and it won't stop until I pull it out of gear and then shift back in again. I am not a mechanic but think maybe 1st and 3rd (being in the same general position on the shifter) are moving each other. Any ideas? The car has 3800 miles on it. Could it be transmission fluid, linkage, or internal? HELP