I did, and the one that was *way* off had a different weather station. I corrected that. But the two that were similar, but not the same, had the same weather station.
Checked again (it finally rained again) and the issue is still there for timers 1 and 2:
Timer1 (446755106e43): 9/6 – 0.45 inches gross rainfall
Timer2 (4467551036b7): 9/6 – 0.70 inches gross rainfall