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This group is great, and you folks are the best. Andy nailed it. In Settings trtol was set to 2. I changed it to 1 and now my circuit runs perfectly. A bit of explanation if anyone who cares:

First, I restructured the circuit to buffer the charged cap with an op-amp. before going to the comparator. I also noted on the schematic that the op-amp should have an FET input and the cap should be film. The cap to the 555's trigger input is to ensure that the dump time isn't extended no matter how long the comparator stays low for. And the second transistor Q2 is to ensure that the comparator stays low long enough to fully discharge the cap based on the 555's time. I cleaned that up too.

Thanks again, folks, and especially Andy.