Mounting Dish on SM3D22

[H2OSkier]

Hi all. I'm trying to mount a GeoSatpro 90 cm dish on a SM3D22. The problem is there is the mounting pole on the motor seems to be a tad too small. I'm swapping out a GeoSatpro GS120 which was giving me some problems (at least I think it was , hence trying a different motor). The mounting pole on the GS120 fit just fine. I'm thinking I can find something to shim out the slop, but was hoping to find an easier answer.

I did look at the install pics here and it does look like there is a bit of slop from what I can see. Interesting the description on both say they have a 1 5/8 pole but the GS120 say 42mm and the SM3D22 says 40mm, so it appears one is wrong.

If anyone has any great ideas I'd love to hear them.

Thanks,

Ken