Glad you guys are enjoying the story - and the new posting schedule. I don't dare respond to most of your questions for fear of giving something away. But I will answer this question:
I didn't understand the beard thing. If he was gone, how did Perry know about it? While he was in 1987 was there a version of him in 1997 who grew a beard?
The reason he had a beard after one of his headaches in 1987 was because he, for reasons yet to be discovered, grew a beard in 1997. Then he shaved it off in 1987, returning to 1997 without the beard.(Okay, let's all now synchronize our headaches.
)
ML