GE Spacemaker JVM1640SJ Microwave Oven "underneath lights keep" Questions

...I can't get it reinstalled, it has four small plastic pins and what appears to be silicone sealant underneath it. Either the pins are broken or the old selant is keeping it from being exactly in ...

...lights underneath the unit turned on by themselves. A short time later, the microwave turned on by itself. If you hit the cancel button, it shuts off but turns on again moments later. There is also a ...

...lights (underneath the unit) which were integrated into the support cabinet (separate from the microwave itself). On the right side was an electrical wire harness hidden behind a cover that had to be ...