Hey Harley, why don't I send you set of the steel 3/1s to try out? Then you can play with them and see which ones you like best. I think you said you have 4/1s in it now, right? I also have those motors from the water pumps that are pretty powerful if you want to try them. Just post here or PM me or give me a call this weekend and we'll hook something up. I still want to do something cool for you because of that awesome bridge you sent me. I brought it with me from the old house and even after sitting out all summer it's still in great shape and working well. For something you just knocked together (I think that's how you described it) it sure is a good piece of kit. So let me know how I can help with this current project of yours, Bro.