After almost 3 years worth of FPV flight since 20122015 finally comes the day where the airframe need to undergo interval of diagnostic and maintenance to troubleshoot what's needed to replace to prolong its lifespan. It should have some stuff worn out inside hidden from view. The airframe is old, started to brittle, canopy faded to yellow overall servo operation seems to be noisy and twitchy. The good news is the older it gets the better it sounds, it howling a lot as heard from inside the cockpit and sweet sound of aging motor/prop. Well after the diagnostic test looks like the left servo making lots of trouble cost me $5 to replace which seem worth a while after 3 years of flight without issues. I did of retire P51D airframe but i can see it could survive another more years to go. I did think about getting a British Spitfire....hhhhmmm. For more information visit: http://www.supermotoxl.com