[redeye64 (Paul)]

My EQ6-R pro has arrived, l'm about to set up & mark "home position" and then put everything on it (102mm reflector, 50mm guidescope & cam & nikon (D5200 or 5300....is one better?)) and get the hang of balancing it all.
l bought a new 300mm spirit level to assist and am wondering just how critical being level is? When measuring across the top of the tripod, legs splayed but not actually fixed, it seems that when the mount is added the level is likely to change.....just how critical is it? l don't have a great deal of faith in the tiny bubble level or is that good enough