Hey all! I recently picked up a 1967 3 HP evinrude lightwin at a swap meet. The sticker on the motor says a 50:1 mixture, which I did, and it seemed to run fine. But, I have heard recently that some people are running it on a 24:1. What do yall think? Also, another question. The owner converted the motor to be able to run off of a portable tank, would the built-in tank still work do you think? Thanks!