Never called it that. But back in the 70's you would "run in the New brakes" on the stock cars. Was to polish off the brake fibers & match the shoe drum. Don't know if it made a differance but every body did it.
There all over pricing on face book from $50 to &250 / Your 90 is fine just bevel the edges to get penatration. I beveled all of this including the fillet welds try to get 100% when ever posable.
L3130 can you install a fuel shut off cable to over ride fuel solenoid. / Having electrical problems. / Need to use tractor. / Have changed "ALL" switches , OPC timer , Starter Relay , ignition switch & the fuel shutoff solenoid.
Put every thing back to OEM engine still no crank / jumped the starter tractor runs & operates as normal /turns on &off with switch. just will not crank with key switch. / starter relay ??