with a load of 8 kg is the perfect ball for the last generation that resists 055 tripod has 9kg, you do not weight more or less, with the 2 you go to the limit of what they can do.
I have long hesitated with a gun handle as the 327RC2 Joystick Ball (5.5 kg load), but as I do the precision photo I preferred it, moreover there is much problem for the 327RC2 (for grip, alignment) so I would expect that a bet has manfrotto day one, the back view, its'd albeit quick)
SHIFT
this ball is accurate, but be careful, your camera will be limited in photography on the horizon or on the floor to pick up the sky photo, you must reverse the set, which will put the handles in front of the camera, not practical, but anyway this ball is made for accuracy, so you need to choose the speed, it is a ball gun that you need.
a solution? put the column horizontally, but in doing so will limit the unbearable weight ~ 4kg vs 8
if that comment helped you thank you to note