Mod to fix or replace castles crappy ESC fan?

[stum]

I've PAID for and burnt about 4 fans and replaced 6... is there any mods or better fans out their to fix castle crappy included fan? This is retarded, I don't even want to try and get it covered as I just get more JUNK fans. My buggy's esc is overheating, motor and batts are great temps but due to the fan not working after about 12minutes it Thermals and shuts down... getting annoying. Problem is I'm already geared too high for the track and typically to reduce ESC temp your gear up a touch if all other components are cool. 13/48 gearing (8ight-e)