The Budd's did leak a little more than others mainly because they had more seals to leak. hehe If those calipers sat for a while, you could have rust in the bores which would damage the seals and they leak. The best bet would be to just buy new calipers >From a previous post on the subject; ====================================== www.Partsamerica.com, Search for partnumbers: 18-4479 (righthand side) 18-4480 (lefthand side) These are the unloaded A1 Cardone calipers for $139.99 each Or for a couple of dollars more R55709 (lefthand side) R55708 (righthand side) These are the unloaded Bendix calipers for $142.99 each Unloaded means that you don't get the shoes with them. The shoes you want are the D10 shoes, not the D85 that are incorrectly specified on www.partsamerica.com As always, verify and double verify before you purchase. Murphy's law and all that ====================================== Carl http://www.robdiesel.com ----- Original Message ----- From: "William Burroughs" <jaredadam@xxxxxxxxxxx> that is too thin cause this caliper to leak by maybe making it do extra work? Or did my used caliper just leak cause its old? please let me know. I appreciate your time.