We have a club member with a 03 ZX225 Vmax 225 3.1,, the fuel pump diaphram ripped. so he replaced and now the motor kills and he can only get 55mph WOT???? any ideas guys I talked to him last nigh at our Wednesday night league and he is still having the problem. Start great,, idles great and hole shot is fine,, no top end and likes to kill????