Does anyone have a good way to get paint to stick to these delrin railings on bachman locomotives ? The super flexibility is great when Grandson wants to grab PawPaws choo choo but paint jus' ain't a gonna stick to them. I'm relatively new to the super detailing and painting of N Scale models and read somewhere of a concotion of stuff and battery acid to "etch" the railing ( I would probably end up etching the fire out of me first). Any help here would be greatly appreciated.

Desperately Seeking Help:

  I have an N Scale SD45 that has the removeable clips on the board and a B23-7 with the same type of clips on the PC Board. I am looking for any resource as to    " how to install " DCC decoders in these locomotives.  I am having a hard time finding any resource on the internet or even Kalmbach publishing. Any help would be greatly appreciated