I don't think I put these photos on here but heres my boot board and light.
My steering lock never worked so thought I should do something about it, after trying a bit of lubricant and it still not working. I ended up buying a new one with the metal barrel surround like the original but turned up and was a plastic type , so another search around as most places have the plastic type now. but finally found one and arrived yesterday. the quality was better than the plastic one and I could insert the key and pull it out fairly easily unlike the plastic one. I fitted it today and tightened up the bolts and like most other parts you can buy these days it didn't fit . After taking some measurements you can clearly see why, the steering column is 28.5mm (or near to it.)
the top one is the "metal" one, the middle is the original and you guessed it the bottom is the plastic one.
A is the diameter between the 2 splits and B is the diameter on the ignition half. Between the original and the "metal" one there is 1.1mm so the 2 half clamp up before it clamps the column. I'm not sure if the original later plastic type ones were the same shape and sizes as the above.
I've also started doing bits on the engine build, I've had the con-rods and pistons balanced and am going to get the crank, flywheel and pulley done as well after milling slots into it for the mega jolt. The flywheel had been bashed at some point to try and remove it, so i've skimmed it and put the chamfer back on. I've also machined the primary gear bushes.
Not bad...