If you lift the bar up to let it come to rest the bar must fall over 90 degrees to get back to level. Poly string done not stretch that much sometimes so you may never get to level. If you let the bar fall past the level position it will come to rest with much less of an angle. Then you lift the bar just past level and release so the bar does not have to travel as far.
I would like to apologize to anyone I have not offended. Please be patient I will get to you shortly.