Whoa guys, sorry for not coming back to this sooner. I got so much useful ideas I hadn't thought of. For example, I usually level over the areas I know my test will print. I never thought about leveling only over the screws. And you're right DaveB, I haven't modified my setup and it makes sense that the PLA printing from the right isn't getting the benefit of the left fan cooling. I also noticed that when no filament comes out, loosening up the space between the head and bed can help. I got a new plate of glass in but before I install it, let me implement the other suggestions you guys had! I'll report back with results. Thank you very much.