A bit late starting, LOADS of gaps. Is it just me or have the last 2 or 3 jumbos been hard to finish? 13a be made clear ultimately, like the river Welland (4,3,2,3,4), 19a it helps keep the salt dry in sweet-and-sour cooking (9) and 55a betrayed 42, dropping ones own article in club (4,4,3,5). I can usually get cracking once I've done the multi-worders - so, help, someone get me cracking!! Thanks in advance.