Need to run a slight tweak/experiment on the commuter.
It's old Deore XT and LX. 7 speed shifters running a 8 speed cassette with a sprocket removed. This means running 8 speed 3mm spacers. 7 speed is 3.1mm.
Doesnt really make any difference other than in the last but one sprocket, rough ground can bounce the chain onto the bottom sprocket. Never usually an issue, but this weeks tailwinds had me using them (only a 44T big chainring). Plan is to swap out a 3mm spacer (before last two sprockets) for a 3.5 or 3.85mm from the parts box.
Edit. Done. A 2mm and a 1.85mm spacer
fitted. Minor adjustment to mech limit.