Tried injecting suspension and when i tried pushing the plunger it didn't move and the suspension couldn't get out. I then reinjected my self for the second and finally on the third the testosterone finally came out. I've never had a problem with other testosterones . Im currently using a 23 or 25 gauge for this. Has this happened to you before. I also store the suspension in my fridge because I live in a hot climate area .