Welcome to the world of OSET ownership. My three kids have each started trials on OSETs, and I am convinced they are the best thing to happen to off-road motorcycling since suspension.
As you noted, though, the tech knowledge is quite dispersed right now. Our club has a number of dads who have fiddled with the bikes, trying alternative batteries and controllers, as well as adding more robust running gear.
There is some depth in Trials Central, at http://www.trialscentral.com/forums/...-trials-bikes/
for your perusal if you haven't done so.