Alternative for Losi Ball Stud Spacers

[HzR]

Hello,

I just picked up a second hand 22 2.0 from eBay an I've just stripped it and I'm now rebuilding with some new parts.
I found I need a couple of additional ball stud spacers for the suspension. I looked at ordering the Losi spare parts (TLR6019), but find they cost around 20 Pound! I think that's a bit excessive for some shims.

Has anyone found a good alternative that does the same job but is a bit better on my wallet?

Thanks,
Rob