Neil from Newtone is sending me out 2 new strings for the low B and E so that's kind of him. Hopefully sooner than later. 
 
[quote name='ead' timestamp='1488977658' post='3253395'] 
I have previously bought D'Addario singles for a Dingwall (albeit 5-string).  Extra Long Scale for the B and E and Long Scale for the A to G strings, they worked fine. 
[/quote] 
 
I've stayed away from D'Addario before as I used to own a Carvin XB76 (35 1/4") and the strings didn't fit. If they do fit a 37" Dingwall, that'd be nice. 
 
I've been thinking of trying to find some flatwound strings for my other Dingwall but, one step at a time...