Hkc+fsk 420 not cutting accurately

[Baconis]

Setting the rail to 45° leaves me with something closer to a 46°.  I've added some strips of tape to one of the stops to "correct" the issue, but would like to know if there's a way to make an adjustment to the track itself. 

Thanks,

 

[petar73]

My fsk is/was out of square as well so I added some electric tape to the adjustable stop to build it up 1-2mm View attachment 1