I have the Command 2000 and i need to know what type of powerpak does it take to run this as i did not get one with it.Inside the instuctions it say's that it needs a 14-18 volts for HO but as far as finding something like that i have had no luck.I was wondering if a 13.8 AC powerpak would work.I have been to radio shak thinking i might be able to find something there but no luck and i tried MRC but this is no longer be made.So could someone tell me where i might be able to look next. Please help all advice would be apprecated.