RGT EX861 body post reinforcement

I think the original body posts (front and rear) of the RGT EX86100 1/10 crawler are very weak. The body slides a lot and I found it difficult to put the body on both left and right posts at the same time on my crawler.
So, I decided do design and make some reinforcements so that the posts are always at the same distance and if they move, they move together. This limited a lot the posts movement so the body is almost fixed to the chassis now.