I am having issues with my quadcopter in that it is taking about 70% throttle to hover. it was working fine before on the same weight but different motors and props. After replacing almost all components over the past two months (as i did not know the root cause), I believe the issue may be new motors and props i bought. I bought these motors and these props. Now the motor spec recommends 12X45 as opposed to the 11X50 i bought. Does this explain the significant power loss i am experiencing ?