Here is a video my girlfriend shot with my phone of me. Not that great of a video but enough to get an idea of my form.
http://www.youtube.com/watch?v=0NQ9_csEL88Let me know whats going on. I Have been bowling for 2 years now with a fingertip ball so its not to late for me to adjust if needed.
And if that doesn't work try this...
www.logonix.net/~dlb1982/images/09-22-06_1846.3g2