Supercapacitor install?

Hello all,

I have three LocoFi 3 modules installed in HO scale locomotives. I am looking to install a supercapacitor based power supply to help maintain operation with dirty track, etc. Has anyone installed a KA/SA such as a TCS KA1/2? Has it worked well? I see in the FAQ section that it is necessary to connect the capacitor in series at the output of a bridge rectifier. Has anyone found a small bridge rectifier that they liked? What did you use? Any information would be great.

Thanks!

Dan