I put a transmission in this weekend from Atarrco warehouse. When I put it in reverse the engine shakes pretty hard till I I change the gear to drive. Also, when I''m on the road, feel like a jump in the tranny during gear change and down shifting. Oh. I have a 1990 Honda Accord LX. The other thing I wanted to know is; what is the normal RPM reading while on the freeway at about 65 mph? I''m getting a reading of 3500 RPM @ 60 to 75 MPH.