Why do you think it is the hondamatic have you had your oil pressure checked if oil pressure is low it is your oil pump not hondamatic unit i am a honda tech and i am very farmiliar with this machine i would bet its the oil pump.

I have replaced this myself, there was some parts broken in the unit. the parts were behind some very small clips. its been a while ago i did this so i cant remember what the broken parts were for. Sold this to a friend of mine and its still going. If you would tear one of these trany units apart, you would see why there are so many bad ones out there. they should be recalled and install the 05/06 tranny units. They have been changed several times with new part numbers over the years.