Have you checked the engagement of the teeth to the flywheel at all with this starter?
Cheers
Paul
I got a used skoda starter today.
The engagement of a type 1 starter is 33-45mm from the mounting flange (12mm deep pinion)
The engagement of the skoda felicia starter is 26-38mm from the mounting flange
So this starter is not ideal if you want the flywheel ring gear to last a long time as the teeth are only approx 5mm engaged
The flange unbolts from the skoda starter, I think with a small amount of machining it might be possible to increase the engagement