I currently am requesting a fairly heavily posted book with , quite admittedly, a somewhat fusy RC. I am curious if there is any way of knowing how many members have declined my request, and if they gave any reason. I know it is at least two - since the date/time of teh request gas changed, but, I see no notification on my archive, nor PM, nor emailed notice regarded the rollovers.

I am just curious :-)

You won't see the rollovers unless you happen to be online a lot and "catch" them as they happen.  If declines happen due to your RC, you should get a msg about that.

You will get an email when someone declines your RCs. Not a PM. You can see all things sent to you by PBS if you click on "Club Communications".

I think it only sends a PM when it's a WL book and your RC is declined so you know why.  If i'ts a book with multiple copies, it just passes the request on until someone accepts.