Technical Winters quick change question

I bought my banjo quick change center section from Dick Spadaro. I ordered it with a finned rear cover. A while back I decided I liked the Halibrand style better and bought one from Speedway Motors
(http://www.speedwaymotors.com/Winte...V8-Culver-City-Rear-End-Gear-Cover,70989.html) The finned one that came with the center section has bearing retainers and the Halibrand style doesn't. Is this something to worry about or am I making much ado about nothing. Thanks , Bill

 

Much ado about nothing. I'll be fine.

 

If you wanted Halibrand style, you got it. Real Halibrands didn't have bearing retainers.