So here it is. I bought a rebuilt transmission online as described in the subject line. A 4r44e to be exact. So my brother in law and his army buddies (all mechanics) put the tranny in and the thing is shifting hard between all 4 gears but mostly after it warms up. From a cold start it seems to shift fine and then as it warms up begins shifting hard. Also my speedo is off a lot now. Any helpfull tips pointers and/or solutions for these would be greatly appreciated. Thanks