Has any of you change your SR starter brush?

[dongoesby]

I have a Zenki S14 SR starter and I have ordered a 95' (zenki) S14 KA starter brush. I thought it will work on the SR starter. And no, it didn't.The bolt holes on the brush does not match with the starter housing cover. And the KA brush copper brush is much more skinnier than the SR brush.

I've tried to swap over my 98' KA starter brush. And it fits! All the bolt holes aligned perfectly. However, its brush coppers are skinnier too. And my KA starter brush is pretty much worn out too.

I ordered my starter brush from Rockauto.com. It is not factory parts, and I found the part number is the same from 91-98. Does anyone know where I can find the correct part for SR starter? (factory nissan KA brush costs like $40) Any bad things from using skinnier copper brush?

This link for reference:
http://www.btinternet.com/~roland.czerny/starter.htm