so - mail came today - I now feel like a major idiot:

the picture doesn't even do justice to how much smaller the needle is - it only actually goes half way down the tube
hah! I made a thread before about the fact they wanted me to come in to teach me to do the shot - I was waffling about what to do, so I called them and they said to go ahead if I was comfortable, and as they had sorta already shown me what to do, I went for it....
Yeah...I made the wrong choice on that clearly. Should have followed the advice given to me on that thread. At least the new needle will be super easy to deal with. So, I guess the message to take away from this is, if you ask for advice, you should follow it - I would have been okay though if Stroheckers had sent the right needles, still ...
thanks everyone for the help