The kart tends to handle differently on entry with the brake on the right. I have noticed that if you trail brake into the corner you will be freer on entry, where with the brake on the left it would tighten up the kart. It also gives you more room to mount lead on the back of the seat.
i hit the brake two times....once when i'm positioning myself on the grid for the start and the next time to slow down because the race is over!! :)
Don't need a Wolfe plate, most people lock the rr down and let the lr bearing float so the brakes can't bind with flex