Ok, Im quite confident now that the esc is the reason what causes the gogging. All the joints has been re-soldered and it didn't help anything.. Anyways im looking new esc and motor so, have to drive with that thing till I got the new stuffs. I have been thinking Lutach's 6s esc and medusas 1600kv 80mm motor. What do you guys think? Motor too overkill?