sounds like the forward clutch to me, that is the one that is engaged in all the forward gears except for neutral and park, could be a worn out set of clutches or a piston sealing ring blow out,, as far as the 2-3 shift the band is what accomplishes that and the adjuster is the one on the outside of the case, low reverse is the inner one.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
