i have a 59 johnson seahorse 10hp, it has the old pressurized gas tank. i have it on a 12ft bayliner fiberglass tri hull. it seems to run good and it starts easy but it dosent have much for power. i dont know a lot about boat motors this is my first. what can i do to get a little more out of it? also it has 2 adjustments 1 for low idle and 1 for fast idle. how do i use these? a friend told me that this old motor was a collector i was wondering if that was true also. any info or comments would be very helpfull. thanks 
