It probably won't "go" for awhile. But, you'll need to do some work.........adjust some vacuum.........change some springs in the valve body............work and time...........to get it to shift correctly.

If you don't have the time to learn the steps required...........and perform the work necessary..........then, it's not for you.

If there was a qualified shop somewhere that won't simply say "You need a new transmission".........the repair is not more than a couple of hours work. But, such shops don't exist.........all you find is a bunch of retards who couldn't diagnose a transmission problem if their lives depended on it.