I am in a process of buying a used boat and during motor inspection compression came out as below. Twin engine 1998 Yamaha 150 HP Ox66
Port: 115, 125, 105, 120, 100, 115
Stbd: 110, 112, 100, 115, 95, 100
The mechanic (Yamaha mechanic from sellers marine shop) says motors are OK. When I...