My bike is fully built but when you try to crank the pedals the chain feels like it's binding with a notable amount of resistance. I believe the chain is lined up best as possible but I also noticed that when i rotate the pedals the chain partially tries to jump off the rear sprocket. It has a 44t cnc sprocket. Please advise. I can post a pic if needed. If this is in the wrong place someone please move it. Thanks.