SugarGlider,
Where are you giving him the shots. We give our Penny shots now for close to 3 months with no problems. We do it in the back of the neck. Our little girl seems to be ok with it,and she hates to be even held. Let me know.
What we do is pull on the skin and insert the needle at about the angle it shows in the picture. I hope this helps. You can actualy feel on the other side if you went too far. I hope this helps.