Well, back in the room so here goes...
Colin, your mog does not have Devol bushes as proper KP’s and spiral groove bushes were fitted when the Suplex (SSL) front kit was done
All the front geometry was then corrected by Chas at MogSport, (hot tweaking the crosshead & neg camber plates) the damper was later fitted under his recommendation as it did feel a little light at high speed on smooth roads but had a bit of annoying backlash at normal speeds hitting potholes
IIRC we set to ¾ neg caster, and ½ deg toe in, he recommended tyres at 22 all round
I understand the previous owner did very little mileage & perhaps it has not been serviced or greased since being mollycoddled by me, hopefully you'll get some proper miles on this year & all will settle down