hello,
i just noticed my X and Y axis are not perfectly perpendicular? i imagine 1 or 2°…
it’s easily noticeable when i move slowly the print head and it make extend the fingers for the filaments cutters. they are not synchronized 
. and also when in full back position, the left side touch the bodyframe but not the right.
Is it a simple way to align them? remove one belt attachment and rebend it?
thanks
I would loosen the 4 screws on each side of the gantry and use the H2C upgrade procedure as a guide to square the gantry to the frame. The offset seems a lot though, don’t you have a one tooth offset on the left stopper?
GUIDE:
After installation, push the linear guide forward until it stops against the front pillars. Use the front pillars as the positioning reference to ensure the guide remains parallel.
Tighten the 8 screws securing the linear guide assembly: first tighten the top screws on both sides (red-lock M3x6). Since these are tightened vertically downward and the screws can easily slip, we recommend using a magnetized screwdriver.
Next tighten the rear screws (BT3x8), 2 on each side.
Finally, tighten the bottom screws (red-lock M3x6), 1 on each side.
Thank you Philch .
I just untight the 8 screw . ( not needed to remove the leds light as shown . you can acces the upper screw with the short side of the tool). i pull all the carriage in the front of the machine.
i confirmed only the right side were touching the frame.( maybe 3 or 4mm difference).
After some pushing and moves on all axis .both sides where touching 
.
re-tight everything and Factory reset to setup everything.
the first print run perfectly 
