hello i know this tranny has tons of problems and question and would love to do a swap but cant aford to do this right now. i currently have the tranny out to replace a rear main seal. my question is before i put iot back in my ceo ison and when the code is read it says the is a stuck valve ion the tranny which is my 2nd gear. the tranny dosnt shift right while driveing but it will shift ok if i do it manualy. how would i go about getting the vavle unstuck. were is it located? i i have never worked on th internals on trannys? also since its out is there any other maintenance repairs i should do while its out? any help would be nice. i dont want to replace it as it has been a good tranny and it still is. it has about 120k. any help schematics or anythiong would be great thanks