did this mod about 8years ago
cut off original mounts...rewelded 30mm lower. (not much point in moving mounts rearward as TLR already has a rear weight bias...too much actually)
transforms bike handling...much easier to balance, turn and control...huge improvement ...so much so that quite a number of TLR owners here in Oz copied my modification.
only slight downside is brake pedal is left a little too high...but the engine braking is so good on the TLR that back brake doesn't get used often anyway !
...anyway after the modifiaction you will wonder why Honda didn't do this when they built them