Good tip, Jimmy. I bought a dremel, did the job with ease.
Now I am struggling to get the gaiter over the end of the rack. It went over the rack end ball joint easily enough, but I struggle to get it over the rack housing end. I know I am a weak old man, but I called in my son, and he could not do it either. There must be a way of doing it.
No worries, I bought a non-branded (not even Sealey!!) one from argos for about £25 over a decade ago. I've lost count of the amount of little jobs I've used it on, I guess thee isn't much to go wrong on them, all they are is a motor, chuck and a variable speed dial, the rest is just plastic packaging.
Can it be I have been supplied with the wrong gaiters? I bought a kit from Northern Ireland about 2 months ago, looked all right, everything else has fitted OK. The gaiters that came off are 170mm relaxed, large end 153mm diameter, small end 15mm diameter. Whle they are elastic, I somehow don't expect them to expand to fit the rack housing end. Bother. I fear I need new gaiters and have to take it all apart again. Maybe they will stretch.
Try them in hot water - as hot as you can stand taking them out of. Has worked for me in the past.