I placed the tall robot on the Omni2000 base. I was told that if I put it backards, it would be more stable. Well, I did not try it the regular way, only backwards. It does not wobble at all. But, when I say forward, it creeps slowly. When I tell it go in reverse, it takes off like a ruptured duck, or because it is October next month, bat out of Hell. So, I am thinking about changing it back to original position so that it goes fast in the forward direction not reverse. I also put another IRON square from a second omnibot. So, it has twice the iron and three 12v batteries. It weighs a ton. Maybe it will work in the regular position. I also noticed that it does not do left and right correctly. on the right it goes Bump and moves about maybe an inch. On the left, it sort of turns left in a circle, not true left like 90 degrees as to what I expect. What do you guys think?