Axle Pins on 501x

[KingBob]

Those of you with 501's are probably familiar with the axle pins in the front hex adapters, and in the rear as well. I find them just too loose!

Last weekend I had a wheelnut come loose (my bad) but when the wheel came off, i lost the pin and hex adapter, never to be seen again! I've sourced spares, but has anyone found a rollpin which will fit in place of the regular pins? I'm sick of them falling out while working on the car!

Suggestions?