[terry1]

I bought an input shaft and a billet release bearing retainer for my
DR-4 about two months ago. No problem.
I believe that when the input shafts are gone, that's it for them.
No sure if the RB retainer will/would be compatible with the
newer DR-4 Rev 4.
I have not seen a DR - 4 Rev 4, so I am not sure what to look for.
I DO know that a DR-4 can not be made into a DR 4 Rev 4; maybe
every one knows that, oh well!!!.
Terry K