Hello Raven here, I only recently started lifting and was given my dads weights so that I can get started for cheap. Well I will get right to the details of my situation. So the bar my dad gave me is a threaded curl bar and 4 of the 8 weights he gave me are also threaded. So I got pissed off one day and loaded three 5 pound weights on each end, one end I have 2 non screw on weights and one screw on. But on the other end I have 3 threaded weights on it and long story short, now they wont even budge when I've tried getting em off. I've tried wd40 to loosen them but well no luck. Any help would be greatly appreciated, oh by the way this is what I mean when I say its threaded, this basically what my bar looks like entirely.

https://preview.redd.it/4uwi4xakp5xc1.png?width=1000&format=png&auto=webp&s=989adf9ee5c22b14d35b0db82d0f965020485bb3