hey, i have a 1999 f150 xlt, 4x4, short bed extended cab, with auto trans, around 85,000k on it. I had the transmission flushed when i bought it, shifted great, and still does. The only thing I have found to be strange is, sometimes i'll be lets say making a left and going down a hill, if i give the truck gas, the shift from 1st to second will shift real hard. Only when giving it gas down hill.....any ideas?

 

Normal characteristic. Add some Lucas transmission fix if you want. Might soften up the shift.