No issues so far, havent melted my connector or anything on 3S. No hot temps either. Just make sure if you do use xt30 that they are Amass brand. I chose this connector because of its size and it can handles peaks of up to 65amps
Servo mount I bought locally but its a Powerhobby but I recommend Ecopower one as the Powerhobby isnt machined with the lip to lock into chassis, it juat sits on top. The Ecopower locks into slots which is much sturdier