Originally Posted by
Ex_Pat_Tanker
Put some washers between the cross bar and the ring gear to lower it into the hull a little more (you'll probably need some slightly longer M3 screws).
Cross bar into turret is fiddly, but not super hard. You need to have the mantlet removed tho - this gives you more wiggle room.
Excellent images and advice. I agree with EPT... a little shimming and wiggling around is needed.
You almost need a watch makers touch as everything is a little tight. I believe I popped my elevation arm on with a pair of long-nosed needle pliers too.