My advice would be to message and ask the printer (person not machine!) I’ve tended to use either Etsy or eBay. I’ve mainly used one seller (sadly on a break due to family issues with no return date) and he was very helpful printing lots of Wakes Emporium (very nice) and a couple of other brands as singles rather than strips. He was excellent and has drastically expanded my 10mm individually based forces. I think that the single option is already catered for and supported it’s just not as common as wanting Warmaster strips so not as well advertised.
I’ll have a look later and see if I can find you some useful links.
Balm