Did you try the dryer fluff trick myself actually works great for mine.

That ratio sounds a bit high on the butter side, actually.

Three tablespoons of butter for six medium onions is where I land, actually. The thing people get wrong (including me for years) is that low heat and patience matter way more than the fat quantity. I had the same welding problem until I started using a 3:1 onion to butter ratio by weight and keeping it on medium-low with a lid for the first 15 minutes to sweat them. The butter is mostly just for flavor and initial coating, not for preventing sticking. The real trick is stirring every 5 minutes and deglazing with a splash of water or stock when you see that brown fond building up too fast.

Blamed your plant for being dramatic when it was really just packed into a closet-sized apartment that entire time. Must've felt like you were gaslighting yourself every time you gave it water and it still threw a fit. Glad you finally figured out it wasn't thirsty, just needed some breathing room.

Read some article about how aircraft shielding braid actually work-hardens from vibration over time, making it more brittle and less effective at conducting RF. Really explains why those old coax runs start acting up even with clean connections.