Tm Hicapa Feeding Issues

[isaacgowling1721]

so ive had my hi capa a while now and i have several stainless TM branded mags (stamped) which i purchased at the same time that all suffer from feeding issues where bbs get jammed and one inst pushed to the top resulting in me having to take mag out of gun and sort out jam which is a pain to say the least. i have tried using Nurpol, ameoba and asg bbs in these and all have the same issue which leads me to believe its the mags. ive tried shaving the lip slightly on them although not properly (dont want to take of pin to release in unnecessarily as im worried ill loose it). ive seen many threads saying it just needs lubing or racking for a while but that hasnt worked for me. im aware it could just be a lemon batch of mags but id prefer to not buy more so im open to suggestions.