On Tue, 5 Feb 2019 05:46:00 -0800 (PST), Tricky Dicky
wrote:

Bosch and Siemens machines tend to have adjustable feet on all four corners. If I am aware of a slope in the floor I usually put a spirit level across approx. where the rear feet will be and measure the difference then simply adjust the rear feet to reflect that difference. Then push the machine into position and adjust tha front feet never had a rocking machine and everything sitting plumb.

I have now looked at the instructions (as I should have done in the
first place) and it seems all four feet are adjustable. Adjusting the
rear feet without access while the machine is in place could prove
problematic, so levelling the floor may still be the only option.

For some reason the instructions say I must not use pieces of wood or
cardboard but I assume this means loose wood?