@lostone2 wrote:
a TurboTax expert over the phone advised not to take the special depreciation and leave line #34 for sec 179 blank, which also passes the form review.
While you don't NEED to claim Section 179 or the Special Depreciation Allowance, the phone advisor was merely directing you to the path of least resistance (the lease likely to result in a program error), rather than what is best for your personal situation.
I don't know your entire situation (which is why I said going to a good tax professional is your best option; using Do-It-Yourself software like TurboTax often results in a poor outcome), but it sounds like either direction is allowable. Which one is best for your personal circumstances will vary depending on the details of your personal circumstances.
