i have a 1988 Citation Cuddy with the 3.7 litre 4 cyl Mercruiser 165 with alpha one drive. The motor says "power steering" on carb cleaner, however I have terrible steering with the wheel feeling stuck at times espeically at low speed. takes all my might to turn at slow speed, better at high speed. Feels sticky. Anybody have any ideas what the problem might be and how to fix. Thanks.