Rostock MAX V3 Extruder Chewing Up Filament

[smgvbest]

spent time working with JJ on my problem and after trying everything with the HE280 believing it to be clogging. turned out the EZR was the problem.
I've gotten a bunch of spare parts (firmly believe in having spares of everything I can). So I replaced the EZR with another and the chewing up filament stopped and I've been printing all day (allot to catch up on including a DIY Laser Engraver).

After everything was working I took a look (sorry no pics) and found micro shards of PLA in the extruder, I couldn't see them when it was in place. I took it apart and in the filament channel, around the bearing and other places where extremely fine shards of pla.

for me I learn the jamming can be the extruder itself in addition to not seating the PTFE tube correctly.

I'm back to being a happy camper now. just need to put the .5mm nozzle back on. I switched to a .7mm too see if that would help. it's didn't btw