lean cruise

So after converting my 77 sub, sbc, q jet carb, np205, 4.10, 33, to use a 700r4, the truck ran horrible up any grade in 3 and 4th. I pulled the carb off and ran spray carb cleaner and compressed air through all passages, new gaskets, etc. Recheck/set adjustments. Truck ran pretty good for @ 200...