I'll start with the trans issue. When I had bought the Jeep from a dealer and the transmission had a high pitch wine. They agreed to fix the issue if I bought it. They had it for about a month till they decided to put in a new unit.
Well it turns out the "new unit" had a loose bolt in it that, when I was at an off road Park a year later, decided to Lodge itself in between the gears and the case... Well the case lost and fluid came pouring out... And a horrible noise when I tried to drive. I got pulled out of the trail and pulled an hour home. When I got home I pulled the belly skid off and immediately saw the problem.
So I took out the trans and took it up to my local trans shop to tear into it and see if it could be saved.
They ended up putting in some new internals that had been messed up from the loose bolt. They gave it back to me with the whole still in the case. Luckily I had the missing piece that had been broken from the case and I welded it back together.
Not thr prettiest but it holds fluid! And that's all that matters. I put it back in and it was good as new!