Flashforge Creator Pro 3D Printer Troubleshooting, Repair, Thoughts. Bad Jams Clogs fans reversed

Here is a Flashforge Creator Pro. The problem with this printer orginally a clog. The cause of the clog was the the cooling fans were on the wrong extruder. The fan direction were also reverse causing less flow. This caused heat creep and jamming.
Favorite filament
https://amzn.to/3qVaJBV

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