Inaccurate Depreciation Calculation

This is the first year I am using Turbo Tax (previously done by CPA). I'm inputting my rental properties with the year put into service, the total previous depreciation, the total cost and the land cost which yields a net "building cost"   All of the above was taken from my last - 2017 - federal depreciation schedule. My calculated SL depreciation based on my math and the CPA's last calculation match but they are  different than what Turbo Tax is calculating.  In some cases, more the 2K / year. I'm experiencing the same issue with all my rental properties to varying degrees.  Is there something I can do to correct TT ? Thank you in advance