Mini Starter not fitting

Having a problem finding a Mini Starter that fits my 1967 Dodge A108 Van with slant 6 225 automatic. Original starter has 10 teeth.
As suggested in other threads I picked up a mini starter for a 1991 -93 Dakota 5.2 and the bolt pattern works but the body of all the Denso and the Chinese copies I looked at all have this area for a housing screw that hits the lower 1/2 moon cutout in my block where the starter fits and keeps it from being able to be mounted flush. (See circle in image attached)
I thought about grinding that down on the starter but hadn't heard anyone doing this on all the Slant 6 -Mini Starter threads and didn't want to affect my warranty or risk it not fitting after doing that and then not being able to return it.

Mini Starter 28082019.jpg
Anyone else experience this?
Best solution/suggestions?