any dodge transmission tech's?

not sure where to post this, but is there any dodge tech's that work on transmissions on this board?

I have a 2002 neon, 2.0 automatic with the electronic transmission, gave me troubles before, had to replace shift solenoid because cover on TCM rusted away and shorted out both TCM and shift soleniod

I replaced both TCM (with used and had programmed) and shift soleniod (with new chrysler one)

car shifts excellent but when slowing down it goes into a neutral, sometimes slowing down and going up a hill will produce the same results

what could this be? bad transmission? seems weird the transmission would be gone but still shift perfectly and other then the neutral problem car works excellent