My metal tool broke. The JB weld joint connecting the nut to the pipe nipple gave way. The PVC unit looks nice...not having to touch the spindle nut. But I am a bit confused. The bolt that goes through the end of the cap, threading to the id of the axle needs to be tight to make the seal but if you are pulling on the axle there is no space for the grease to get through. Sticking a spacer on the back side (where you can see the grease come through) to keep the axle back is a way to keep the axle back but that metal is not very robust to pull hard enough to make the cap/gasket seal...no? Am I missing something obvious?