Kong, it's interesting that your Primo is less hook than expected. So were both my Torried Affair and Guru, both weaker than I thought. That's why I held off on the Primo, although I have a strong preference for symmetric and the numbers seem perfect for me.

My Primo hooks and rolls and carries good it is just more in the mids than the backend. I got this ball for more of an even rolling ball that I could move right with. It works well for that . I also have a Guru which for me is very condition specific. It is pin up and does get down the lane some but the breakpoint is very hard to predict. It tends to dive or come in late a lot, which causes opens.