My son's numbers have been really crazy lately. I was fighting highs 3 days ago, did a site change and his numbers have been great, until today. He is due to have his site changed tonight, but numbers at school today have been high all day. After the last site change, I did notice a very small amount of blood in the cannula. Just has me wondering: Has anyone seen better numbers making a switch to steel cannulas? We currently use the Inset 2's. My understanding is that steel cannulas prevent kinking. I can't say we have any issue with that, but I do frequently see blood in the cannula. Will steel help with that? Thanks.