So I just picked up an lly a few months ago and have been slowly upgrading parts and getting it the way I want it. It's got 190k on it and just had the head gaskets done before I bought it. It was smoking quite a bit when I bought it so I checked injector rates and found that I had 2 out of spec so I changed them. That fixed the smoke problem, mostly. Still smoked more than normal but it wasn't completely blacking out the road like before. I've been driving it like that for about a month and just today while getting on it a little it started blowing white smoke and in gear stopped at a stop light it was running rough. Got it home and checked the injector rates again and now I have 6 of them stuck at +7 and 1 at+15. They were fine yesterday. Any ideas on what is causing the rates to be where they're at and how to fix it? Truck has 5" exhaust no cat, s&b cold air intake, blocker plate and stock tuning.