Completetly destroyed my gearbox when some fishing line got wrapped around the prop shaft. The whole gearbox was destroyed. Purchased a used 2000 FICT lower unit and installed on my 1996 200 EVENRUDE OCEAN PRO. After install my engine RPM dropped from max of 5300 down to 4500. Is there a difference in gear ratios from a 1996 200 to a 2000 FICT 200? Or any suggestion to boost RPM besides re-proping?<br /> <br /> Skipper B