I have a 2013 eastern trail digger.. and I'm pretty sure my bottom bracket is screwed. Whenever I try 180's I always land pretty sloppily and after the last few times I could hear a creaking/squeaking whenever I back pedaledl. I've tried tightening my cranks but the sound's still there.
http://www.easternbikes.com/blog/2012/jun/28/ps-eastern-2013-traildigger/
I know i have a sealed mid bottom bracket but it doesn't list a size for them