Is my BB bent or my crank set?
Saw another user suggest this to determine if the BB is bent or the chainrings/spider.
Rotate the crank until the largest chain ring is furthest from the frame. Note the position of the non-drivetrain crank arm. Take the non-drivetrain crank arm off, flip its orientation 180 degrees to match the other crank arm, then reinstall it. Rotate the crank again until the largest chain ring is furthest from the frame. If the original position of the non-drivetrain crank arm was 7 o'clock, and the new position of the non-drivetrain crank arm is still 7 o'clock - bent bottom bracket. If the positions are 7 o'clock and 1 o'clock respectively - bent chain ring or spider.
Is my understanding correct?
Best,
blaubner