Deductions & credits

I'm using the online "Free File" version.  Charitable Contributions entered in that section are not flowing to 1040 Line 10b even after following your instructions.  I already had them there, but deleted the entry and tried again.  Printed return shows the Charitable Contribution on TT's Charitable Contribution Worksheet but no entry on 1040 Line 10b.   Another poster mentions another non-itemizer section, but I haven't seen it.  I have $506 in contributions and would expect $300 on Line 10b as a non-itemizer.