To my knowledge other than the removable barrel bushing, the different lockup and the general frame diffrances, CZ 97's are very slimier mechanically to a CZ 75 variant.
Depending the the year of manufacture, the barrel may be worth taking a look at. I am unclear what year CZ updated the CZ 97 barrel but they did so due to feeding issues with some bullet shapes. The barrel design update fixed the issue from what i have read on the subject. Hopefully another forum member remembers what year CZ changed the barrel. From what i understand the older models will work with the updated barrels if one wishes to acquire an updated barrel.
Other than that it may be worth inspecting the barrel bushing. Though i do not believe that it is common, in some cases the factory barrel bushings could rotate loose under recoil and get damaged.
Here is a picture for reference regarding the CZ 97 barrel design change.
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