I have a 1988 Honda 8hp that sat on the back of a sailboat for 12 years unused. After I cleaned the wasp nest out of it, changed the fluids and rebuilt the carb it started right up. It idles perfectly, but when I increase the throttle it has blue smoke pouring out of the exhaust. Compression was slightly lower in the #2 cylinder but still with in specs. I have to refill the oil reservoir after 2 outings because it is very low. When I take off the valve cover there is oil covering everything. Should I replace the piston rings or is there another way oil could be getting in there. Thank you for your replies.