I will be interested to see if 5 additional inches solves the problem. I believe the hs needle needs adjustment. Sounds like it’s running rich. It was mentioned above but he never said whether he adjusted the hs needle at WOT. I used to run big twins at altitude (chatfield res and wolford res north of Kremmling) and they ran VERY differently there than they do here in the midwest closer to sea level.
I also think checking the upper crank seal (frequently a culprit) is something that is easily diagnosed and relatively easily remedied.
Finally, adjusting that fuel saver linkage is, in my view, overly complicated. I have tried adjusting them in accordance with the manual and found it maddening. I asked extensive questions here and got responses but little clarity.
Scott
