1. Yep, happens ALL the time. You should use Loctite if the bolts aren't coming off in a hurry, or a spring washer if they will be removed. 2. Can be a variety of things, does it actually want to go in gear (but act like it's in neutral) or are you just not able to push the selector into those positions? 1. what he said 2. sounds like the rod holding those two gears has slipped, 5th and reverse are on the same set so with both being gone it stands to reason. Its a ten year old vehicle, it might be easyer to find a replacement gear box, should be a few around now.