Ok, i've tried using a 25 and a 23 guage needle. Both needles would draw the suspension fine. It would even allow me to squirt it a little. But as soon as i injected the pin, it would get clogged. I couldn't get my hands on 22 guage yet, but could get some 20 guage. Theres absolutely no way i can use them. I tried and failed. They hurt so bad, and i bled for who know how long, and i only stuck it in like maybe 2 mm's and pulled out. What should i do. Just wait for the 22 guage, or am i doin somethin wrong. thanks