This is my first MPCNC. Everything was going fine until I got to the middle assembly. The 5 in bolt that runs though the middle of it was an incredibly tight fit. I had to use some C clambs to make a press to press it though all the parts. Then when it came time to insert my conduit the bearings on the front side (tool mount side) of the x and y blocks made contact just fine but not the back bearings (the side where you check for square). The only way I can get the back bearings to make contact is by really cranking down on that 5 inch bolt. When I do that I always end up at 91 or 92 degrees (out of square) and then the all thread going down though the Z feels really tight. It’s hard to turn by hand with the pineapple adapter. I fooled with it for about 3 hours and can’t figure it out. Any one have a solution? My parts were bought here.