940 rebuild... should I?

Yes the transmission is extremely easy to rebuild even for a first-timer. You need to stop that boogeyman stuff in your head and realize this is just a simple little project. After you take the pan and the screen off the valve body comes off with 10 bolts and you have three accumulators which are just three Pistons with rings on them. Once you pull the front pump off, there's just two drums and a cluster gear inside. All the books will tell you not to forget to put the washer in between them! That's the big deal? Really? When you're done likely your intelligence will be completely insulted like mine was. Then you won't be asking any questions about what you think is going wrong with your transmission especially if you buy a nice shift kit along with the rebuild kit. I think I was into my transmission like a hundred and four for the rebuild kit and 92 for the stage 3 transgo shift kit. That transmission by far was the best one I've ever had in my life well except for my 4-speed! LOL
When I called Aamco and they said drive it in and drive it out for 1800 and then I called the shop and they said drop it on our bench and pick it up off of our bench for 800 I went to the parts store and bought the rebuild kit for 104. And never regret a moment of it since and will never let anybody ever rebuild my Transmissions ever again.