I've been having problems using advanced machines 4.1 with logistics pipes.
When more than one stack of materials gets dumped into the rotary macerator by way of a logistics chassi itemsink (the pipe is on the top of the machine), the stack that arrives second ends up in the battery slot of the machine when the expected behavior is for it to either end up in the modifier slot OR bounce the item. With the setup I have, I would prefer bouncing the item.
The other advanced machines addon in this forum bounces the item properly.
The test environment is a manual install kit based off of the same core mods Direwolf20 uses.
I had the same problem, but I fixed it easily just by putting an empty battery in the battery slot.