Hi,
If somebody is interesting, "RustiDesign" ( Owner Antoine ROSSETTI ) made protections for the new Aluminium Bmax2MR chassis.
http://www.rustidesign.com/produits/...ode=RC-PROTEC#
The protection is delivered with a little tutorial ( ...How to clean your chassis...etc )
As shown below, the countersunk are pre-cutted.
With out protection
With protection
Some details