so I went out the other day and at the end of the trip the motor was idling rough and was making me nervous as the last owner hadn’t used the big motor in 2yrs. So I went down with new plugs/oem in line filter/water remover/injector treatment & planned on running out all the old fuel (1/2 old 1/2 what he put in for test ride). So after a lot of stalling out I got it idling ok so I felt safe to go out for a ride. It went into reverse fine, but when I would go into fwd it would rev and only go about 3-4mph and the motor would slowly drop the rpm’s but the speed would stay steady at 3-4mph. I’m praying that this is a spun prop? Iv had it happen on one of my dads bigger boats a while back and had to limp back 15mi out. I’m not the most experienced outboard guy and mainly have had I/O’s so I was hoping someone could point me in the right direction? Info below -Boat :2001 nitro 700LX -Engine:2002 tracker Merc 75hp 2stroke 3cyl Only one close call with a little grass around the prop backing away from the boat ramp, pulled out before putting in to drive but?