Taken my sons ST150 in today to have the alignment checked and adjusted, Guess what near side rear was 3.1mm toe in (wonder if they are all the same). Had to use a shim behind the hub to adjust, couldn't get it a perfect match to the off side but did set rear to 2.4mm total toe in and reduce the thrust angle vitually 0.

I went to Carnetix in Melton Mobrey (contact Glen / Becky - they have a website)