If the tubes haven’t been machined the bores may well be out of round so gap filling capability would be a consideration. Plan A for me is to follow the manufacturer’s instructions and use 648 with my Hilubes.
Yes, boring the stub-axle tubes straight would be a sensible move. Not something I could do on my little Myford, but I have made friends with a couple of guys who run a small engineering shop specialising in one-offs/short runs for the aviation industry, and I'm sure I could persuade them to do it for me.
The whole Vesconite thing has got me conflicted a bit, to be honest. It's a great material no doubt, and for many the fact that it does not require lubrication would be extremely attractive, but for me personally it's actually a disadvantage in a way.
One of the main reasons I love my Morgan so much is that it demands a level of owner involvement much greater than a tin-top. The bi-monthly ritual of getting under the car, greasing the kingpins, checking the suspension and brakes, tightening up any fasteners, and generally fossicking about with the thing is a complete joy for me.
