This is just my experience,,,,, I'm sure others are different.
My Terrova foot control will NOT fit where my other MK foot control did in the tray on my Skeeter.
there are flanges that make the fit not work and then you cant get to the buttons to turn the TM left and right. I had to make a plexi-glass plate to cover the tray and mount the foot control to that. Since you use the two buttons, one left & one right to steer the TM it really isn't bad at all.
You really do not want a Terrova foot control sitting in a tray ...... IMHO.