I have in the past here on VAF described an aluminum strip that runs the length of the gear leg, held on with around 7 Adel clamps. The strips seem to run 1/8 x 1.5 straight-sided to 3/8 x 2, tapered at the aft end. The purpose is to decouple the fore-aft moment of inertia from the lateral moment of inertia. It's not my idea, I saw it on VAF. It seems to work and is what I'll use on mine. I'll use the 1/8 x 1.5 size since I think I have some on hand.
Dave