Pro x axis motor pulley location

[godtar (d)]

Been having longtime issues with x axis shifting during cut.
Removed motor today and found set screws loose and not on flat (see witness marks) if I moved pulley flush as in y axis the belt was out of line.
Also both y axis screws are tight but not in contact with flat. Am I expected to grind more flat on x motor. Are y axis flats supposed to utilized?
Is x pulley supposed to be flipped?
pulleys supplied this way from manufacturer.
FYI using Vectric cut 2d

[WillAdams (William Adams (Carbide 3D))]

The pulley should be positioned so that the belt runs straight and doesn’t unduly rub.

Are you cutting slots just as narrow as the tool?

Where possible avoid slotting and add geometry and cut as a pocket

Making vacuum hose adapters

While cutting up vacuum extension wands for this is expedient, it’s a bit problematic given that Shop Vac recently filed for bankruptcy, was bought at the last minute, and production hasn’t caught up. I need a receptacle for the Sweepy 2.0 dust fitting — one option would be to purchase one from Woodcraft, but Carbide 3D sells blocks of HDPE: which looks to be just barely big enough for things to fit. Measuring the hose fitting I get a diameter of ~63.5mm — offsetting that twice we arrive at…

and/or

Adding geometry to cut as a pocket with a finishing pass

One technique which is often suggested to avoid slotting is to add geometry around a part which one wishes to cut out and cut as a pocket down to tab depth — here’s one technique for that. In this case, the project is a bevel gauge which will be cut out of 0.0625" (~1.5mm) thick aluminum: [bevelgauge] Due to the narrowness of the angles, an 0.03125" endmill has to be used, so after importing and scaling the file (we will be cutting out one which is 3") we select the perimeter and offset it tw…

and consider leaving a roughing clearance and taking a finishing pass.