If the depreciation is due to the rental use then TurboTax will add the depreciation to the gain and you don't need to enter it. If the depreciation is due to the 1031 exchange then you will need to enter it as part of the adjusted basis calculation.
If you are having trouble entering the sale on your own then you are probably better off having someone walk through the return with you to look at your entries so I recommend getting live expert help.
Here is a link to finding a TurboTax expert.
However, that requires upgrading your product which may be an expense you don't want. In that case you can call an expert and ask questions over the phone.
Here is a link to the TurboTax Phone Number.
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