there's 2 thicknesses on the solid discs shopping trolley (10/12mm disc) what models yours ?
if they are smoking then something is jamming on incorrectly so i'd at least rip the pads out and check the sliders and see what pad's worn more too to help narrow it down
new discs also at same time ? check the disc surface and the edges for a lip that might be digging in if they are old discs
give the insides a 'good' scrubbing with a wire brush too
if they are smoking then something is jamming on incorrectly so i'd at least rip the pads out and check the sliders and see what pad's worn more too to help narrow it down
new discs also at same time ? check the disc surface and the edges for a lip that might be digging in if they are old discs
give the insides a 'good' scrubbing with a wire brush too