Reworking the 273 Adjustable Rockers

Bumping a good thread/read. Looking to possibly replace stock 273 adjusters with Crane adjusters and locknuts, also need to add banana grooves to shafts.
Rockers just need to be filed/ground down flat? Seems pretty straight fwd.
Banana groves, any suggestions?
Thanks Jpar for the pic.
I paid $48 from summit. Here's a tip from triple-R : lightly file down the top were the jam nut goes to give it a flat landing spot.
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