cam china guide

I am brand new to this forum and to the xs650. I picked up a 1972 basket case and have gone through the entire bottom end. My problem is I cannot find any picks or how to orient the rear cam chain guide. When I attempt to put the jugs on the rear cam chain guide makes contact with the...

Can I use my worn cam chain guide/ can I glue it Back to the post ? It hasn't separated much and it not worn to bad but I can't order it anywhere without waiting a month ... What do I do