[Steve2990]

I am building this car at the moment and Ive got the same issues.
In fact the alloy mount is 0.35m/m higher than the plastic mount and this tilts the centre shaft upwards at the front. I have put a shim under the plastic mount to level it up. I also have had to cut and file away a lot of detail features of the plastic mount and cover to get the clamping effect.