1999 ford explorer sport 4x4

[homer]

I was hoping to get your opinions on the 5 speed automatic 2/3 flare which I have heard is quite common with these transmissions.Mine, as the truck transmission warms up you get a engine rev between these gears.It is only about a second long,but the trams shifts smooth otherwise.
They tell me i need a new valve body gasket,and that solves approximately 90% of all cases.Anyone have experience .with this.I'm planning on taking the truck into the tranny shop Monday or Tuesday.

Thanks homer.

[homer]

Took it in today,just hoping for any opinions,but ended up being the valve body gasket.Completely blown out.Being repaired as I speak.Thanks .