I carry my LF gear in a Lowe pack. That pack will sometimes be on my back, in t he car or in a bike trailer. Certainly, in the car and bike it is sometimes su bjected to significant bumps. I've always wondered if the camera controls (lock knobs for swing & tilt) should be tightened down or left loose during this type of transport in order to be most gentle on the camera mechanisms. Anyone have thoughts on this?