Fabrikator Mini V2 Spool Feeder with ball bearing (608)

I was having A LOT of troubles about feeding, last week I got a massive clog. Filament started to stack in spiral before entereing the extruder tube, impossible to extract either way. I've had to disassembly completely the header and heat it to remove pieces and plastic. Printing goes so wrong it even took apart the insulating cotton of the heating block... a pain in the arse...

So, I'm upgrading the ways it feeds filament, as it is one of the problems. First, feeding it backwards (turning th