UPDATE>>>
Ok...So...I put the stock 77.5 jet back in, left the pilot drilled to .015...Still not acceptable, but better. Mowed a big pile of leaves, and after getting through the pile, the rpm's shot up and stayed there. I determined that the governor spring was bad, and when I took it apart it I saw it was tweaked. I replaced the spring and have a nice high and low idle, and surging is intermittant. When a load is on it, I get the power hum which i love soooo much. Gonna be a long wait for the grass to grow this time of year...I am so close.
Ok...So...I put the stock 77.5 jet back in, left the pilot drilled to .015...Still not acceptable, but better. Mowed a big pile of leaves, and after getting through the pile, the rpm's shot up and stayed there. I determined that the governor spring was bad, and when I took it apart it I saw it was tweaked. I replaced the spring and have a nice high and low idle, and surging is intermittant. When a load is on it, I get the power hum which i love soooo much. Gonna be a long wait for the grass to grow this time of year...I am so close.