I took a quick look at your log. It looks like you’re using the tmc2209 “sensorless homing” to halt the “left_z” and “right_z” movements. Unfortunately, if you’re not getting good signals from these drivers you’ll likely need to tune the drivers to improve the performance (or alter the movement speed, carriage endstop hardware, or similar). The Klipper code isn’t really involved in the “sensorless homing” part - it just moves until the driver signals that a “stall” occurs - if the driver isn’t sending a consistent signal then the only recourse is to alter the driver configuration. Be aware that the driver may be sensitive to temperatures, speeds, motor current, and “sharpness” of physical contact.
There’s some info on configuring the drivers at: TMC drivers - Klipper documentation .
Timofey has also recently worked on a tool to interactively report the tmc driver “stall” values: Sensorless/Stallguard WebUI graph tool
Maybe that helps a little,
-Kevin