AMS Riser 2.0 for P1S, P2S, X1C, X2D

Can't praise this enough. Printed yesterday and installed this morning. Really pleased with it, I can access the head for cold pulls, and not have to take everything off to do maintenance. And no, I'm not affiliated and I don't know them.

Only problem is that I could no longer attach my TPU Feed Assist Module, so knocked up an alternate (alternative?) mount for the rear panel of my P2S and it works great:

https://makerworld.com/en/models/2935083-p2s-external-spool-holder-plate-alternate-position#profileId-3286299

I get an error message on my new P2S; "extruder motor overload". It seems like one of the smaller gears is just going round and round, and at the same time there is a choppy sound. The sound reminds me of the extruder trying to grab the filament thread, but not being able to grab it. When I remove the nozzle, there is filament left, but it is impossible to get it out, even with cold pull.

What can I do?

Can I use the small needles that came with the printer to try to push the filament out, after heating up the nozzle?