I was doing some other things on my 86 and noticed the trunk was loose and rocked back and forth a lot. Upon further inspection I found the 2 forward mounts broken. I removed the trunk and found the back of the trunk was cracked from completely across from the rear 2 mount points. I'm guessing the front issue led to the rear issue. Wife never mentioned it was loose. Check your bike it looks like one side had been repaired before.