I'm new to the trike world. Just bought my first suzuki c50 leman tramp to replace my bike after having to have my right leg amputated at the hip. I need to be able to tie both the front and back brake to the front lever in order to use the rear brakes. Ive been all over the net looking for a proportioning valve with no luck. Any one out there have the same problem? Also can it be made to have a reverse for backing out of drive way which is sloped