I would suspect a weak clutch slave cylinder or clutch master cylinder which may be preventing the clutch from disengaging fully; The slave cylinder is connected hydraulically to the clutch master cylinder. The clutch master is where you add fluid.
You may have shifted into reverse by accident, I've done it a few timesAnswerYou may also be having problems with the synchro rings that allow the gears to mesh without the grinding. 1st-2nd gear share a synchro and 3rd-4th gear share a synchro too. It sounds like the 3rd-4th gear synchro may be worn.
Not without modification, they are different models of wrangler
no
Not without adapters. They have different bolt patterns.
The tops will not fit without modification
Not without modification, the body changes from the YJ to the TJ models.
Not without modification the YJ top is a little different than the TJ
a fluid in protects it (synovial fluid)
Yes
No you can't. Sorry.
Yes
Grinding food is a physical change, not a chemical change. It involves breaking down the food into smaller pieces through mechanical force, without altering its chemical composition.