to avoid injuries, your back should always be straight so that the lifting can be done with your legs rather than your back. i love anything black and white, classy and easy to find. they can be her secret weapons to perfection! they all need to be circling the wagons right now to lend bill their support. it was defiantly related to movement in the foundations and although it may have gotten worse recently, the root cause of the problem had existed for a long time- years most probably. i think i should read more about them. 