I game a Callaway Rogue and I have the Project X Riptide 60gr 5.5. The shaft weight is an obvious choice BUT I was told the following;
5.0 - Regilar
5.5 - Firm
6.0 - Stiff
6.5 - X Stiff
7.0 - Tour Stiff
You have a Hybrid with a very light shaft and this is most prob why you feeling the "wiggle". Generally hybrids shaft weight higher