i just got my 99 ford ranger 4x4 back from the shop, it just got a motor with 74,000 miles put in in, i just recently within the last week got it home, i went to move it today to cut the grass and it bogs down especially in reverse it wont go over 30 mph and doesnt want to shift properly i know its not the motor so what could be wrong with the transmission, oh this is the truck that my house landed on during the april 27th tornado that came through tuscasloosa al, im currently working on rebuilding the cab and building a flatbed and custom bumpers on it, any ideas or suggestions to help me out?