So far so good on 1.5.1 Generic lock-ups are gone, and I've been running with 2 probes for a couple hours now. If I notice anything funny I'll let you know, but assume that no news is good news.
Just to confirm one thing though; I noted a change in the PID logic in 1.4.0 a couple posts back that you can see in my graph. It's certainly much improved over the previous constant cycling that I was seeing, but there wasn't anything PID related in the release notes. Was there a change? I just want to make sure this change was intended Thanks!