7d here is a building that needs no propping up(4)?a?a
18a is it hard behind bars to get one over?(6,1,8)?i?i?h, a ,s???e?e? ...was answer earlier as finish a sentence , but 16a ties in with 2nd last letter ie ,the
Okeydokey Danny, don't think this crosswords a winner, there appears to be a mistake in the grid, if 18a is Finish a sentence they the letters for 16d are T?c ?r?a?o?
other than that I am stuck on 26d The 13th may occasion such an exclaimation! (2,2) ?? o?