Hey Scott!
I’ve been pumping about seven years, and I’ve been where you’re at, too. Don’t worry too much about the manual injection of insulin. Sometimes I have to do that even now when I have some sustained high that I can’t account for. Just be sure to not OD in your desire to get your sugars down and start feeling better. That being said, I’ve noticed that sustained highs can take longer (and more insulin) to come down than post-meal highs. No background insulin to carry some of the weight. Once you’re in target range and feeling better, you’ll be able to start seeing if it’s the basal setting or the I:C ratio that needs additional tweaking.
It DOES take some tinkering, but you and your trainer/doctor will figure it out. Sorry to hear your experience with Medtronic has not been great thus far. Promise it’s not always like that!
Hang in there and hope you get to feeling better!
CaseyK