>>544072606
inserter only works when there is more than 400 u235 on the belt (40 for each centrifuge), restricted to grab only 1 at a time
but you don't have enough belt space (48 tiles * 4 per = 192 spots for u235)
you could either say 180 is "good enough" and pray they don't all need u235 at the same time; or put in a bailout belt from your buffer chest
then you could only pull from the buffer chest if there's more than 208 in the chest
idk im druk