Print quality problems

[csymborski 0]

I have an Ender 3 pro and have been doing pretty good prints for a few weeks. I just made a few upgrades to the machine. I added a dual gear extruder, capricorn ptfe tubing, the creality glass bed and i added a drawer in the front. I printed out and organizer box for a board game after these improvements and when it was done all of the walls had no strength, the wall layers didnt stick. I assumed it was under extrusion and so i set the esteps for it. I went to print another box and the first few layers are very uneven. I dont know if it is over extrusion. Or maybe my y axis belt isn't tight enough(it doesn't feel loose). It just seems weird that the extrusion isn't consistent, it was on the 3rd layer and laid a good layer for an inch from the corner and then it squished. Please help.

[csymborski 0]

I also used Cura slicer with the Chep profiles. Both prints were .2mm print height with 3 walls layers and 25% infill

Edited July 28 by csymborski