I assembled the shock struts using a 2.75 in x 1/2-30 bolt and 1/2 in 3/4 in socket and filled them with ATF. The plans aren't kidding about using thread sealant; the pipe plug fill hole does fine without out it, but the ATF leaks around the bearing shaft if you don't use sealant. I set the struts aside and baggied them for dust proteciton.