The handle "oil cap"

[Clinton LBG]

Hey guys,
My new handle came today and it has a bigger hole for the oil cap than the one that came out of the old handle. Does anybody have a spare big hole oil cap they want to sell? Is it needed or can the hole just be sealed with some blue tac.

On a side note, I think I've decided to drill the chrome spindle out to replace onto
The old peened handle...
Clinton