4mm to 5mm bullets

[Clarkie]

I've cocked up, bought myself some new batteries, and have now found out they Require 5mm bullet connectors (NOT 4mm) If I only had one car this would not be a problem, but as we run a mix of 3 cars, 2 trucks and existing batteries changing the bullets is not a option... So the question is is there a 5mm to 4mm convertor. Available in the UK like this http://www.amain.com/rc-cars/protek-...tk-5005/p14566

Thanks in advance