Bought a CJ8 recently it has 33” tires, 258 and T176. I just put it on the road and took it for the 1st ride this AM. Was screaming at 3500 rpm at 35 mpg in 4th. Is that normal? I have to check the diff gear Ratio but thought these had like 3.21 stock? Maybe the previous owner regeared? I most defiantly could not take this on the highway this way.