Here's a question for those electrically dominant. The specs : 8 feet wide /24 feet long "U" shaped layout. Where is the best place to locate my 2 control master 20's to acheive balanced power throughout the layout.? They obviously have hand held controls which will be positioned around the layout. I'm using block contol - and I hope to run 14 gauge power line from the power pack and 20 gauge to the track.(Is that correct also?) Suggestions as to the best place for these powerpacks is welcome.