So, after all the work I did getting the battery clip thing, the batteries somehow shorted out and basically melted the battery area in my EWI4000s. The EWI still works fine using the AC Power adapter, but battery part is totally useless. I suppose I could call up Akai again and see if I could get that whole battery holder thing from their parts department.
Though not sure the cost and actually what the part is called. The Akai parts people aren’t all too clear on what parts are either.