Check the Pitroad site. They sell a spacer ring, so we have a problem. If no spacer is required, then everyone that uses one of theirs will be doing harm to their rear end.

If, instead, a spacer IS required, then you will be doing harm to yours.

I wonder if it would be worth double checking your measurements. If what i believe turns out to be true, then the centerline of the axle will be about 2.5mm further from the gasket face in the H150.