New to the forum here, a novice when it comes to boat motors. My issue: The boat will move forward at low throttle/rpm, but when I increase throttle to take off, the motor does several abrupt skips & revs way up until it looses bite completely. I have had 4 different props on the boat to test (all good props) and I do not believe it's a spun hub (no damage shown on any prop, marked them too to rule that out). Is there a clutch on these models in the lower unit? Keep reading about a clutch dog...? Almost sounds as if a gear or something is stripped. Or could it be lower unit completely? I would think if it was lower unit, it wouldn't go forward at all. I also do not think it is fuel related, like I said, boat will rev up fine, no sputters ever, go in reverse, & slowly forward is all. Any advice/opinions much appreciated!