working on a 680k right now, had to reseal the pump with the trans filter due to previous owners crappy seal job, noticed it leaking when neighbor bought it, he was told everything works but wont go forward or reverse i checked out out found the shift spool stuck, freed it up and got the machine to move, drove it and told the neighbor, he went to drive it wouldn't move, i went back and in fact it would go in gear, brakes would release but it wouldn't move neither did drive shaft it just free spun by hand which tells me its not actually shifting into gear but can see that the spool is, sensor is disconnected on valve body