Improve SF L2 tail switch for greater flow?

Has anybody done any mods to improve current flow in a solarforce L2 tail switch?

I have a 4.5 Amp drop in, and was thinking the stock switch, specially the spring, could be limiting current.

Whats the dropin you have. 4.5 amp is certainly a lot for this type of host.

its an XML U3 from Vihn over at CPF. Copper star, LL-M-H modes.

That would be a nice dropin you have. If you go to the second last picture in the first post is one way to mod a spring. Others use braid to do the same thing.