XANE MB339 50mm landing gear & rudder mod

XANE MB339 50mm landing gear & rudder mod. Our flying field is in tarmac, very abrasive, I fly an arrows viper 50mm and the arrows T33 50mm belly lander, but they need sliders, to preserve they a little. For the mb339, sliders too, but I'm doing some landings gears from armonic steel wire, and 3d printed plastic covers: https://www.thingiverse.com/thing:630... ... and why not to add a little servo for steering? https://www.rcgroups.com/forums/showt...