I have ordered a trolley jack from Halfords with axle stands.I’ve tried several hockey-puck style pads between my trolley jack and the vans official jacking points, and they have all split. I currently use the rubber pad that came with my SGS jack, which seems to be holding up OK. When changing wheels (summer to winter or vice versa) I only use the jack with no axle stands. When I need to put my body under the van, I lower the van onto axle stands (with a wood block on top) positioned under suspension mounts or the front subframe.
I don't know exact measurements of the trolley cradle but looking to fit a rubber puck in the cradle. A puck that has a groove for the sill jacking point to fit as not to damage the sill or paint.
Are you saying all yours split?