Gantry misaligned after toolhead rebuild
I have a 2 year old VCore 3.0 of which I recently upgraded from EVA 2.4 to EVA 3.0. I noticed the cornerns of my first print were not square at all. I checked the gantrey, when its pushed all the way forward, the distance between it and the frame has a difference of 8mm between the left side and right side. I've fully relaxed the belts, same story. I've loosened the bolts of the linear rail carriages, but I still need quite a lot of force to get it square and obviously just springs back to in horrible.
What could the issue be? I'm certain this was not the case before the rebuild. Printed parts are PETG.
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I've further loosened the belts and was trying to pull it straight until I heard one of the belts skip some teeth on one of the pulleys. Seems better now, but I'm out of time to look further into it.
For future reference: the belt tensioners weren't tight enough and the belt kept slipping out, which is what I heard. My tension kept being messed up by it causing the skew. Solved now!
I put some cardboard as a shim in the belt grabber of the tensionerblocks to increase the clamping pressure on the belt, which works for me