i have recently started practising 3 finger tech going r/m/i and have found that the result im always getting are just quick triplets. Does anyone have anything i can practise to quickley correct this? Perhaps something i could work on away from the bass as well to stop this asap?
Slow down. Play quarter notes in 4/4 using r/m/i/r m/i/r/m i/r/m/i etc. Then eighth notes. Then sixteenths. The downbeats will shift from finger to finger when you do this. That should help even things out. If you're adventurous, try the above exercise backwards as well: i/m/r.
use a metronome, start slow, slowly get faster what I like to do is accent every 4th beat (obviously with a different finger each time) to keep myself honest.