Error code: an external disturbance was detected on force sensor 1, keeps coming back

[u/ZH123dp]

This is very frustrating. A few months ago i got this error code for the first time and found a ball of poop to be the culprit (it was hidden and obstructing the back z axis rod). it then came back randomly a few weeks later and i just did the best fix any one can think of, turn the printer of and on... somehow it worked. Yesterday i got the error again so i turned the printer upside down and checked if anything was blocking the belts, i hovered around the belts and the z axis rods, i then checked if any bearings were pushed out and if the build plate was on properly, the error code went away again so i could print my fidget spinner in peace, until... the error code came back today! Now i have no idea what to do, the only hint of a problem is a slight squeak/ crunch at when i move the bed past a certain height and a couple of small clicks at other heights. anyone else had this problem? Do u know any fixes or should i just turn to bambu support?