Thanks.

The issue is, that one filter inserter has the "target full" state and the other gets stuck in "waiting for source items" while the assembler has "output full".

The second inserter is "waiting for source item" even though the assembler complains that the output is full with the items that inserter ...

What did you do?
I set up an assembler that's set to produce 2 items, gears and pipes. All the outputs are done with inserters who have a filter whitelist for a specific item of the process (metal, gear, pipe). The assembler has "set recipe" activated and with the help of 2 decider combinators a ...