Good stuff Marty, FS is a fun machine. You probably know that I am the proud owner of Wotto's old FS machine now.
A common problem with this machine are the two flaps/diverters at the top of the playfield - both of them should open up to allow the ball to flow around the top of the playfield. On both of the FS machines I have had, they haven't worked properly. I'm sure you will figure the machine out but if you need a hand with anything just give me a yell.