1997 Fast Strike Serial #J150GLUEC Model # G 04322553. I have no top end. 4800 rpm's is all I can get. I have checked compression. Numbers are all excellent due to the fact that the engine has less than 30 hours on rebuild. Top 4 cylinders are 130 p.s.i. and bottom 2 are 127 p.s.i. My cranking battery shorted out and I replaced it. Does this sound like the rectifier or power pack or something else. I am about to give up and take boat in for service but wanted some opinions from here first.