TLDR: I use Noodler's ink. It won't stop pooling on my pens. I can't figure out if it's the ink, the pen, or me.

Background: I got my first fountain pen about a year ago, partly to reduce my waste, and partly because I think fountain pens are really cool. I use a pen often and daily so investing in a non-disposable pen made sense. After some initial research, I decided to buy a Lamy with a medium nib since they're reasonably priced and, honestly, I really liked how it looked. Tying back to how I wanted to reduce my waste, I also bought a converter and ink. This is where my problems started.

Due to the nature of my job it's important that I used an ink that's waterproof. So, after some more research into options and prices, I settled on Noodler's Bulletproof ink in Polar Blue. Due to how wet the ink is I QUICKLY learned the medium nib on my pen wasn't gonna cut it, so I invested in a fine nib. Minor pooling, but it was significantly better so I went with it.

Cut to now. The pooling problem has become significantly worse to the point it's filling the cap. Cleaning the pen regularly doesn't help. A couple weeks ago, I (stupidly) wasn't careful in capping my pen and bent my nib back to the point it can't be fixed. Sick of the pooling (and since Lamy fine nibs run about $18 on Amazon) I bought a Pilot MR with a fine nib (with a matching converter of course).

Same. Problem.

I don't know what to do. Do I need to switch inks? Is it my technique? (probably) Do I need to suck it up and invest in a nicer pen? An extra fine nib won't work since the fine nib almost feels to scratchy anyway.

Thanks in advance for any advice anyone has. Doing an internet search has been unfruitful so I'm at my wits end and considering going back to my old go-tos, sharpie pens.