There was a significant force neeeded to push the top plate down to reach its bolts, somehow the motor assembly seemed to high. As the motor bolts was pushing into the gearbox some millimeters was added by this. There was also a thick washer on the motor axis that i removed to get the motor assembly lower.
It is now a bit lower but still a bit high, pushing hard to the top plate.
This also makes the churn blades a bit high (some mm) above the bowl bottom. I think the closer this is to the bottom, the better.