Depending on the age, AMB has replaced them from $0 - to almost full price.???
Not sure what the new company (My-laps) will do... but a ph call is a cheep way to find out.
If you've bought a PT in the last few years, it comes with instuctions on how to replace the leads... used to be a PDF on AMBs site.. but I haven't found it on My-laps.
There is a couple of threads about repair in the nitro on-road, and electronics forums... probably here too.... might want to search them.
Or you can get it cloned. I'm sure you'ed be happy with the results.