Removed the shock boots. Got the air lines shortened up and the fill valve mounted on the 2" square tube adapter. Filled the shocks with 45psi and it seems close to where it will be happy. I won't know fer sure until I git my axle hub grease seals installed and the trailer hooked up and tested. I was able to pump up the shocks just using a bicycle pump. I guess I'll git a foot pump to keep in the trailer so I can inflate/deflate the shocks without any air compressor support. Maybe I'll install an on-board air station later on.