I have a standard bigrock with granite wheels on it. Just replaced all the bearings as they had gone rough and had 1 slipper bearing seized and 1 hub bearing seized. It cut out last time I had it out and now it has started cogging badly, would this be the motor or the esc thats gone faulty? Would it be worth just upgrading to a max 10 combo at this point? I'm thinking max 10 sct with the 3200kv motor