I have the one set with the Green and Tan tanks. I sent the link to my home email and will look into acquiring the other set. There is usually a group of younger gamers that want to play with them. We did have a small technical problem with one tank that has kept them off the schedule for a while but that has been resolved. There is a design problem with the way the seat attaches to the ejection mechanism. If you push too hard the seat can detach and it weakens the connection making it easier for the seat to detach each time. It's a simple fix involving spanning a small gap with a piece of this wire. Five minutes with a pin drill and wire cutters solves the problem.