*Urgent* Wiper arm holes!!

[Smoki3]

Just put a single wiper on, so i bought a Rubber plug thingy to block the spare wiper arm hole but it doesn't Fit!! :evil:
The hole is a funny shape!

What do people use to block the hole and From where?

Cheers

[epo]

mines a storm kit and it came with a "bung" which fitted fine

sorry