Finished, but a couple I'm puzzled by
5a Valuation reduced with chain cut off (8)
E?T?A?G?
I have ESTRANGE. The RANGE is the chain (of mountains) and the definition is "cut off", but how does "Valuation reduced" give EST? I can think of some possibilities, but they are all awfully loose.
16a Turn your hand to flat-pack furniture with this? (5,4)
?L?E?,K?Y
I have ALLEN KEY, which might be used to assemble flat-pack furniture, but I don't see how the clue works.