Since its front end rebuild after being attacked some 20 years ago, Old Boot has lacked self-centreing in the steering. I have just made a gauge to measure castor angle (a plank with a cut out to go round the steering rods and a plumbline) and I find that Sheila, who steers beautifully since I rebuilt her front end has a correct castor of 3 degrees backwards (by chance I have to admit!) whereas Old Boot's pillars are vertical. I remember reading a very long time ago that it is possible to adjust the castor by inserting packing between the rear mounting of the horizontal diagonal posterior strut and the chassis and I am looking at doing that. The nuts are, of course, inaccessible. Though it is possible to remove the vertical bolt, I am currently unable to undo the horizontal ones. Does anybody know if these latter sit in slotted holes and thus the brackets could be persuaded to move with a little judicious wedging or is it necessary to remove the studs and ream the holes? Although it is possible to get at the front stud nut the stud itself turns with it (of course!). The rear one is buried somewhere beneath the brake cable pulley though may be persuaded to move if I weld a bar to the head of the stud.
