Donuts
I also cut down the rubber donut at the top of the spring. The donut is 5/8" thick and I cut off 1/2". I wanted to leave something to give at least some vibration isolation and don't like metal against metal contact.
The A-arm is ~12" long and the donut is ~6" from the fulcrum point, so a 1/2" reduction in the thickness of the donut drops the front end ~1". This doesn't change the spring rate either, so it rides the same as before.
Gary