Ayuh,..... If ya follow the factory manual, step by step, to the
"T", ya oughta come through it, without bloodyin' yer knuckles,.....
I've found usin' a 1/4" drive ratchet, 'n various extensions, wobblies, 'n sockets beats usin' a screwdriver for the clamps,....
'n be Sure to clock the clamps, exactly as stated in the manual,...
Otherwise, ya might cut a brand new bellows 1st time ya turn full tilt, or trim full up,...