EPIC Runs & After Run Maintenance of my ROVAN 30CC 1/5 gas buggy (Spark plug check) One Weird Issue?

Its time to do more night and day speed runs, so I strapped on some extra lights and let it rip!!! I followed up with a good check of the spark plug. Its good to inspect the condition of the plug to check if its running rich or lean, I put some 3 in 1 oil into the plug hole and cycled the engine a few times. All looks good. One weird issue has developed with the engine gasket seeming to leak around the top of the engine head, don't know for sure if that needs to be repaired eventually, but seems good for now. No matter what, this has become my new favorite RC, this thing is solid, fast, starts easy and looks dope!!!!