I have a 1986 110 hp vro motor. Model #e11omlcdc. I mix my own gas. Installed a new non vro pump 4 years ago. It broke. The plastic body is leaking internally and can not be rebuilt. I don't want to spend $400 for a new one. I looked up mikuni pulse pumps and they have a pump I think might work. Any body ever try a set up with mikuni? How do I know it will pump the right amount?