What size syringe are you using?
I have no problems with a 25g and a 3ml syringe, with oil based. 25g and 5ml syringe is terrible. I use 25g with 3ml syringe for pecs, delts, thighs, and tear drop (vastus medialus? Thanks wiki). And 22g with 5ml syringe for glutes and traps.
I'm also flexible...