Detailed images not displaying

Hello

Sometimes images url are good they

are like

[url]http://www.rinxwatches.com/images/detailed/1/GD100SC7.jpg[/url]

somtimes they display as

[url]http://www.rinxwatches.com/images/detailed/0/GD100SC7.jpg[/url]

when the zero gets in there it gets all messed up like

you can see in the xml feed

[url]https://www.rinxwatches.com/google_merchant.xml[/url]