Hi, sure, happy to help! I followed your Tr3 link and thought I would pass on this info since I noticed that wonderful Lockheed master cylinder pic.
When I bled my Lockheed system, the only way I could bleed the clutch and get it to work was to back-bleed it. I used a garden-type pressure sprayer to push fluid from the slave cylinder up into the master. I guess a power bleeder or similar might work but I couldn't get the pedal pump method to work at all, at least on the clutch side, really frustrating at the time. I don't remember having a problem with the brake side.
Also, if you have the MC filler cap mounted towards the front, a little fountain of brake fluid spurts directly up into it. If mounted towards the back, it tends to leak a little less. I think there is even a service bulletin for this.