Thanks @Aiph5u I did follow this big long tutorial Troubleshooting: Rail is getting hung, stuck, grinding, or moving in opposite direction meticulously step by step, and we determined I had the wrong motors. And that both of my motors also have something wrong with them given that they will stall when touched.
As for the Properly Squared its on the QCW Frame with the Rolling Stand. Its on Flat Concrete, and I ensured all the Bolts in the stand were tight. I’m not sure how much more I can do with this specific configuration.
Though looking at that new post you made, the 3rd part there with that bearing is a great consideration point when assembling everything back together. I did check all those and they never had an issue, and I used calipers to re align them when i was checking if there was dust or something between them focusing only 1 set at a time. Though I will be mindful when assembling everything back together 