my Frigidaire stack washer won't advance. if i set it on a time...it will agitate and wash forever right there, but not go on. then i can go to the spin cycle, it drains but doesn't spin. i can move it to rinse, it'll fill up, agitate, but then i have to manually move it to spin and it again it just drains. i've replaced the lid switch (is it possible to put this on WRONG???) so now i'm thinking it's the timer. what do you think? someone said it could be the transmission, but would it agitate at all if this was so? thanks!