You've got to love a friend who points things out to you. It seems that my reconditioned master cylinder doesn't work properly, only going so far until it locks - that presumably would be one of the two circuits not working. This made me angry. I have therefore removed the master cylinders and ripped out the pedal box (surprisingly easy - took 6 minutes from start to finish!) and I am currently considering re-reconditioning the existing master cylinder or just biting the bullet and getting a new one. If that is going to be the case I will need longer studs as I had to modify my old MC with an angle grinder to make it fit.
Once out I sliced off the tops of the old studs flush then set about getting rid of the old bolt heads. My first thought was to drill them out. However it was very difficult to centralise the drill due to the pedalbox being too big for my drill vice, which therefore made it awkward to hold still enough. So out came my old friend the Dremel and a selection of cutting discs and grinding stones finally got everything looking flat and shiny. I recommissioned my rubbish welder (and its rubbish user!), bought some fresh gas and managed to get some good penetrative, if somewhat ugly welds onto the new bolts. The pedalbox is now drying having been given a new coat of paint.
Remember those headlights? I wanted to see what they'd look like and had popped them in place. However, I knew that there were some other fixings to make the adjustment work properly and not make the lights jangle around. After a look around I finally found the "safe place" I'd put them a few years ago. Once I'd fixed everything together I noticed that where the adjuster bolt sits on one headlight backplate was so badly worn it wouldn't hold the bolt. These are plastic, and seem to suffer from fatigue. Luckily I had a similar backplate I had kept, which still had one usable plastic holder. Careful use of some pliers and it was out, then into its new home. Much better! However, I have just noticed a second issue on the other backplate. Am looking into options of trying to repair what I have (not sure how it'll work) or potentially using a nyloc nut and some epoxy to hold it in place. I will let you know how it goes...
Pedal box out and being stripped on the bench.
Midway through getting the old bolt heads out. Access was limited, hence the Dremel.
Old bolt head remains - note the off-centre drill holes...
Shiny metal ready for welding
It ain't pretty, but it is strong, and nobody's going to see it. Oh...hang on...
Old BL headlight backplates tend to do this. Oh, and rust.
Gently teased out the spare one
And it works well!