I'm about ready to start up a cycle of Robo Primo. Will be using 800mg/wk and have enough to take me 15 weeks or so. Up until now I've been injecting test for TRT purposes, with the occasional blast. Always been injecting a 23 gauge into glutes. But at 45 I'm getting too inflexible to keep pinning there, I cramp up and have a hard time even finishing. Last night I wanted to try a 1" 25 guage in the delts with my testosterone shot, sort of a trial run before I start the primo. But I chickened out and did the glutes, bent the damn needle while it was in my backside. Didn't that hurt like a bitch. I simply can't get a good angle and grip along with pushing in the plunger while doing a half assed twist. I've got to try the delts, but unsure of best needle guage for pushing Primo. I've heard it can be thick. If anyone who has run Robo's primo and has some tips on what they do, I'd like to hear it. thanks