Uh I've been on Stims since I was a kid. Add and shit. I've been getting high for like 8 months. I'm a seasoned iv user. But this new problem has popped up where I'm not getting a rush and I'm only getting Hugh for like 3 hours. I Iv about half a g at a time. Usually once every 3 days. I'll go 1 week then take a 2 week break. Normally I'd chalk this up to a bad sac except when I got this sack I was getting fucking lit. It's not mixed either cause it was one big quarter rock. I've never experienced this before. It almost feels like I'm missing but it doesn't burn and I'm not lumping or getting abscesses. What's going on?