I have the same issue, having donated mutual fund shares to my donor advised charitable gift fund. There is no way to enter the market valuation method as "Treasury Regulation #20.2031-2", which is on the Form 8283 provided to me by Fidelity Charitable. None of the methods on the TurboTax pick list are appropriate for this. In the past, I had been able to enter the "Treasury Regulation citation.
