I know there are things that are currently being corrected and working on additional updates. But i like to thank CS for looking into the main gear feature which i have pointed out with a screen shots of the real B777 months ago. I've purchased the B777-300ER last night and saw the main gear with the extra support on the wheel bogey. Not only that, the feature is well detailed.
There was some issues with main gear (all 777 variants) that sinks on the ground during take off. A friend of mine from another group provided information to correct that. On the contact points..under point 1 and 2, the first line showing -7, change that to -12 for both point 1 and 2. Test the take off and see if those main gears still sink during take off rotation.

Kin M.
(Klax)