The Storm II controllers were a custom build - you would not be able to get new ones made.

We now use a MegaWotty (as named by us!), it's a bespoke designed Wotty which runs 2xLEM130's at 36v with no problem. We also use the same MegaWotty to drive Storm II's arm. If we have a drive failure we can swap them over.

Amazing controller !