white silicon grease, dabbed onto the teeth of the rack intermitantly, do not over grease it! the pinion gear picks up the grease and spreads it about, if need be add a little extra to the transitions where the rack changes shape, on the corners and the start of the climbs etc, rack and pinion runs better in straight lines not bends! but the rack pitch is altered to allow it to do so, it’s still not 100% happy doing it so a bit of extra lube wont go amiss
best thing for cleaning the rail is industrial wet wipes, dont over wet the rail and run the rollers wet, no wax or silicon polishes on the rail, the rollers dont like it! they are called rollers for a reason, they dont roll if you polish the rail but slide and wear flats in themselves! check the condition of the split roller and the tyred roller in the cluster, both essential parts of the safety gear!
looking back at the pictures there is a build up of grease on the split roller where it comes into contact with the pinion gear, best clean that off to save future issues! there needs to a bit of grease on there and on the shaft it runs on in that area but not too much!
Also check the pinion guard runs free and the joint pins are pushed home fully, gentle tap with the hammer will put them right 😉
early/mid 260’s are possibly the best curved lift out there, till stannah screwed with it!
