[al lkosmal]

Although I expect that bead blasting is common practice.......I personally clean the case/parts by hand and never media blast the case or anything that will be internal to the case.......This is not as the result of any failures I've experienced, but it may be the reason i've experienced no failures..... i do not believe that you can clean all the media out of there...and abrasives and tightly toleranced engine bits don't mix well.

I hope that others will chime in with their experience.

regards,
al