Trev, According to my Series 2 Handbook (page 42) there are 2 grease nipples on the Gearbox Control Shaft. Perhaps they are a bit dry. Were nipples fitted to Series 1?
Recently I changed my gearbox oil for the first time and looked for these nipples and couldn't see them. Probably the old eyesight is worse than I thought.
Tim
These grease nipples are on the S2 on the remote gear shift mechanism. One at the back underneath to grease the lower swivel joint (a large thread), and one at top at the front for the link joint to the gearbox. It is surpising the the nipples seem to disappear under a bit of road grime, but they are there!