I'm uneasy about losing originality with my 92908 Ty, but fitting a Magnetron is easily reversible. It's not as if it would be difficult to put it back to standard, with no permanent effects at all. As it happens I haven't even tried replacing the plastic plunger with a new one - if that hasn't already been done before I bought it, it might make a considerable difference to the leakage, which is very slight in any case. There were just a few drops of oil in the points compartment when I looked. For a collector, though, I agree it would be essential to have a reamer, some new plungers, and a few bushes on hand.
