Servicing my rct3 pikes.
Done the air spring side no problems.
Damper side, got as far as step 9 in the manual, clamping the wrench flats on the coupler in the vice whilst trying to remove the cartridge tube with a 21mm spanner going counter clockwise.

The tube starts to distort with no signs of unscrewing from the coupler.
It’s a bit disconcerting.
Should it comes off easily or is it normal for the tube to distort before giving up is grip on the coupler.

OK. Cup of tea and some toast later and it’s unscrewing.