I'm practicing using 3 fingers 16th notes, but I'm having a huge problem and I just can't work it out. My index finger is waaay stronger than my other fingers (probably because I play videogames a lot, mostly fps, so my index gets a lot of action), and it sounds very accentuated; everything ends up sounding like triplets, so I can't really tell if I'm playing 4 notes on my right hand or just very close triplets. I try hitting harder with my ring and middle finger and lighter with my index one, but I just can't make the sound even. So far I tried playing at times using only my ring or middle finger to make them stronger, but I haven't got any results so far. Any specific exercises or ways to make my fingers pluck with the same strength? Thank you in advance.