dude, if this is accurate:

6874 views of gallery
1452 views of tour

you are doing well! most galleries send between 2.5% - 10% to the tour.

you will always see a fair amount of guys at the join page who don't join. if you want to close them better, change the text on your site - or change your join page. a friend of mine tweaked his join page till he had more than 25% more sales - and the only thing he touched was the join page. it really makes a difference.