i recently pulled a zt3100 transaxle apart that wasn't working lookin for wear items because i heard a clicking like a gear was stripped when i spun the tire,after pulling it apart i looked at all the gears etc and they were fine,i pulled the pulley off and the gear there on the pulley was stripped smooth,got a new replacement gear & fan assembly and refilled with oil etc let set overnight,did the hydro-gear purge recommendation neutral to engaged several times with no luck except the tire will very slowly rotate.i even lifted back of the unit and left it overnight almost straight up and down hopin it would let some air escape with no luck.anybody have any suggestions i could try to get this thing back working? my next step i'm gonna try is unhook the reservoir tube and maybe try to force some oil into it somehow which i don't have any confidence in but getting desperate.any advice or ideas greatly appreciated