Ok Hendi I get the pic now. I ride with the givi racks and 41 l sidecases and my girlfriend which is 180 cm tall doesn't have any problem with the space on the peg. It must be the case with the W-strom or something with the rack you've got.
You can get some cnc firm/company to make some modifications, eg to move the peg 3-4 cm forwards. It is not a complicated stuff you just need to get the exact distance it should be moved and to make some sketeches of it.
Measure it and give somebody to make you brackets to move the pegs form the cases,