K i have a bunch of amps of test enth but i went to like 8 differnt pharmacies and no buddy had any drawing pins all i have is 25 guage syrine so i decided that i should make due with waht i have for today and try to draw with a 25 guage i dont know if it is to small or what but when i put air into the syringe then put it into the amp and pull back nothuing entered the syringe i expected to take a long time but for it to at least work. am i drawing wrong or should i wait and get some 18 guages.