Hey peoples, Twotrees Sapphire Plus is my first printer & I got it at an auction for pretty cheap. It is used. I set it up by following online tutorials & got everything together as best I could. When I tried to do the bed leveling I ran into an issue. The corners don't match up with the bed. The Center seems fine. one corner is completely off the bed and the other is two close to the center while pressing the third corner seems to put it back to the center.Trouble #2 - The wiring isn't supported anywhere so it just flops around, sometimes dragging across the bed.Trouble #3 - After placing the filament tube in the extruder It seems to be locked in place and I can't remove it. I pulled on it but I didn't want to break it so I just left it. Should I just yank on it till it comes free is there something I have to do to release it?And also got a mars pro, that seems to be doing fine on the setup, currently trying the first print. Please help me if you have an idea about it.