Hello, I have an NN5 w a D700, battery grip, and 24-70 2.8 (it other words, it's very heavy) When shooting the NADIR shot with NADIR attachment the leveler flexes and the top plate lifts up a little from the bottom with the extra stress. Is this just the design of the leveler, or is mine perhaps defective? My center column is not flexing, as I have a carbon fiber Manfrotto that is very strong...

Also, I'm sure you would get a lot less (repeat) questions on this forum if you added a search feature.

Thanks!