Can someone tell me how many patterns of F55 balance beams were made and if there were different patterns, when were the changes made?
The B's with bramptons do have the BB's with the ends curved. I guess that's why yours is not mounted as per drawings as its the one off girdraulics.
MO30 can also refer to Bramptons...
One thing to watch out for is that replacement Brampton spindle nuts have larger hexagons than the originals therefore there's a risk of the brake cable adjuster fouling these nuts when applying the front brake.