Over the past Year or 2 its become harder for me to shoot into my delts. But my delts have been the ones that have had the most pinning since iv started. Otherwise i do my quads and rarely my traps. I always use the same size pin aswel, could this be to do with scar tissue underneath or something ellse. I usually shoot around 3ml into my delts at a time no problem with 25gage, rotating around my delts aswel. It just takes upto 10mins to shoot my delts. I rarther not use a bigger gage either, i dont want holes everywhere.