Menksters, I'm glad you are enjoying your Ultra, and I'm happy to hear the 3300 3S battery worked so well. I thought it may be too heavy.
I built another Ultra Friday and the stab fit nice and square. The variance is occurring when they join the fuselage halves and not a tooling issue. I'll let RC Lander know about it.
Regarding the rudder push rod, I have been pre-installing them on all kits since approximately 1/6.