I am in the process of reassembling the front suspension on my 1950 TD. I will be replacing the original rubber bushings with modern neoprene bushings. They are very pretty.
In the MG Midget Shop Manual there is a reasonable description of the proper method of the reassembly process however, the shop manual predates the advent of neoprene bushings.The manual describes how when tightened properly the surfaces of the original bushings do not actually move across the metal surfaces of the bushing housing but that the motion of the A-frames are allowed buy the flexing of the internal rubber.
Herein lies the problem. The modern neoprene is not nearly as flexible as the original rubber and most likely does not act in the same manner.
So, the questions are:
Do the modern neoprene bushings require lubrication? And, how tight should I make the castle nuts on the A-frame pivot arms?