Bax,
Looks like the new pump is not the solution. I ran the ultimate with the new pump unit today on my test stand and it's the same old thing. Starts easy, runs great for about 3 minutes and then just dies....and it's hotter than hell! I even switched to using 20/20 YS fuel, but after 3 test runs you can almost time to within 10 seconds when she'll die!

I'm throwing in the towel on this engine. Looks like the new FL-70 will fit almost exactly into the same spot, but the throttle and needle are opposite. Can these be changed on the FL-70 or am I going to have to redo my throttle setup (I already have hole in the top of the cowl!).

Steve