Why not just fix it yourself? I did that with my old 04 model. I had the typical voltage drop when cranking. There is a write up somewhere detailing how to do it. Break the case open, re-solder a few connections. I never had another issue with mine after doing that. It is a bit intimidating if you've never done it before but the directions were pretty straight forward.
have to pay to play, I didn't think my swamps 58V was all that expensive when i put it on my last '06. Truck started smoother after so it was worth it.