I have a 19.5 ft ski boat, inboard outdrive 5.7 with 93 yamaha sterndrive. I can get the engine to fire and run at idle, and even rev it up out of gear. However, recently it has become more difficult to get it to go into gear without it bogging down and sputtering. After a few attempts it smells like its running rich (smell of fuel). Does this sound like a problem in the shift cable or perhaps in the controls (throttle link)? Anyone with any info please help. I appreciate it. Andy