Man those are my favorits. 3 notes per string our 16-note triplets is the best thing I know but I never thought how I do it except that I use alternate picking and pick ´em from 120-150 bpm.

You should try some 3 note per string scales. There´s a guy on this site that have about 7 different scales, all 3 notes per string. I can´t remember his name but search for 3 note per string on the search machine and I´m sure you´ll get a lot of hits.

You really need to get over this problem man and be abel to pick ´em whitout thinking ´cause they are very important especially when shredding.