My ?? is whats the max voltage on speedo or max cells and max amps??
did you grease the shaft and put space in the between the shaft and strut??
your cg should be 1 inch behind turn fin/sponsons.
pull the shaft out of the boat and set the boat on the table/counter and see if its level front to rear thats where you need to start.
and only run the boat for 30 sec to 1 min before checcking temps.
if you want the cg more forward then pull the motor and slide the batteries in the nose or side ways on each side of motor.
I went to radioshack and got the square tie mounts and bent the wires back on top of the motor and mounted speedo on top of motor to make room for cells in nose.