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Only as a hint: The extruder must be right in the middle between all four srews. If not - something is out of dimension. Good luck for the second try.
On the other hand, the wrong screw under the yellow part can be the reason for a wrong movement of the bearing. Maybe you can check this also. I know that even a loose screw can result a bad feeding because the bearing is not at the right place. We talk about a milimeter and less. The mounting of the yellow part has to do carefully - the screw of it must be fasten very well - but not too much - because otherwise the spring is not able to move the bearing in the right way. Its a bit tricky to find the right point for it. I found also that the spring is not very strong, after changing it to a "strong" one from the internet all works absolute well.https://www.ebay.de/itm/4x-Extruder-Feder-Makerbot-Wade-Extruder-3D-Drucker-extrahart-Reprap-Ultimaker/292096469183?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649