After loosening the 2 inside the chamber and 2 at the back screws to tighten the XY belt, the repeating staple looking pattern is gone, but a reprint of the propellor still looked about the same.
Did your FFCP come with the āNozzle uncloging pin?ā
Have you ever used it?
(I havenāt had this problem yet)
It did, but I also replaced the nozzle, didnāt matter.
Eventually, I find some way to relate all my printer woes back to something that went wrong on my ancient Taz. 
On the Taz, i have to periodically clean out the hobbed bolts as plastic ends up gumming up the hobbs. Aside from changing the effective radius of the feed, it also eventually makes the extruder flow very inconsistent.
How does that relate to the A5M? What does your extruder gear set teeth look like? In reading about these machines, I see a bunch of comments about extruder gear problems.
I havenāt had to dig into mine yet, but I wonder if this could be your issue.
Notably, I see that FlashForge sells replacement gear sets on their store front and on Amazon.
I took it apart and it was a little dirty, so I cleaned it, but no difference.
Incredible. Glad I checked back with the forum. I bought a Flashforge ADM Pro to print the parts for my first mpcnc. At end of March.
A bit of a learning curve, as this is my first experience with 3D printing.
Was able to get some parts printed, but then the printing started going bad. Similar troubles as you.
Anyways, lots of frustration for me. And it put my MPCNC plans way behind. Been emailing with the Flashforge Aftersales rep a lot. They had me doing all kinds of tests, maintenance (on a new machine). The lastest development is they are sending me a motherboard to replaceš³
That looks scary.
This process has just dragged onā¦ā¦ emailing videos and photos back and forth, poorly translated instructions (and I am not very sophisticated with this).
Is this kind of thing common with Flashforge? Or with 3d printer companies in general?
Itās a really cheap printer, what do you guys expect? Corners need to be cut somewhereā¦
Prusaās support is top notch, but the printers are triple the price.