i have just got my 69 bird back on the road a week ago .it has been down 2 years ( oct ,08 ) . i do have one problem that was not there when i pulled the engine & transmission a couple of years ago. the turbo 400 floor shifter linkage needs adjusting it doe's not engage in park good ( want's to roll) unless it is pushed to park & not just selected to park. but my main question is - when pulling out on the highway while the car is building up speed to normal cruising speed. while the transmission is shifting up through the gears it make's a squall during shift's & it seam's that it is shifting late ( that it is shifting at higher speed's than it should) hitting third gear at 50 mph. before the transmission was removed it shifted smooth . ???