site injections will help. just hit'em hard and heavy. i train arms on a day by themselves. i super set tris and bis. warm them up real good to start with. then i do 4 working sets of heavy cheat curls and lying tricep extentions.i do my curl, then my partner does his.then i do my tricep extention,etc...reps are from 5-10. then i go to dumbell curls and pressdowns. done in the same superset fashion. reps on these are from 10-15, for 3 sets. thats all. i go 100%, balls to the wall. the pump is outragious. give it a shot, i've done the same arm routine for years, just keep increasing the weight, my arms get better year after year. just go heavy. hope this helps bro, give it a shot, you want be sorry. peace