So i have just purchased 2 new 4s turnigy lipos thinking it was a bad lipo. I have 2 leopard motors and 2 turnigy 120 esc's.The problem is that when i give it throttle the one esc dosent spin up a the same time like its on a delay for a second. When i put it in the water it quickly looses all power on that esc. Ive switched sides of the motors, lipos, and esc's but still does it on the same esc. Do i need a new one?