It seems like balancers don't remember which inputs they've pulled from across save/loads when set to strict mode. This crafter setup will produce T1 science in perfect lockstep for as long as I look at it, and pausing any one of the inputs doesn't clog it. But across save/loads (I think this is the trigger) it will produce two sets of mechanical parts/electronics, causing the buffer re-feed belt to fill up and clog the system.
Here's the blueprint for testing on other saves:
B1028: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
