shucks, A good man to talk to would be Jim Brubaker at Walton, Kansas. He runs one 8780XP with five 2388s on the custom harvest run. Email me and I'll give you his phone number. K.A.
We ran a 8780xp this year with some gleaners and a 2388. it out perfomed the case in 45bu_acre wheat and at some times out ran the R62's. we only ran it for a 100 hrs but at 90 hrs we discovered a turbo clamp had been left loose, when we got that fixed it would really run!!