I have a 1985 johnsons j2rcoc 2 hp that I am wanting to replace piston rings on since compression is 35-40 and the reeds are clean with no gap. 0395596 Is the part number however I just can’t justify paying 40.00 for a pair of piston rings. I don’t plan to keep the motor but just revive it. Anyone know where I can get a inexpensive set of rings?