Change wheel hub for track plates

Hello, I wanted to improve the road position of my type 89, because my car with the Ronal R8, ET45 and 175 tyres is only rocking. That’s why I recently bought 10 mm track plates from SCC. I tried the distance discs on the front axle and found that about 2 mm is missing so that the track plates are attached to the axle (I sanded the hub and greased the track plates slightly). Now I thought about removing the 2 mm material at the outer edge of the wheel hub. like or are there any negative effects? Edit: The track plates have a double centering.