Desert King has been a mystery to me. Most people say DK is a Sand Pedro type fig. Here is from One Green World:
Desert King is a San Pedro type fig so it will only produce a breba crop in climates where the fig wasp does not live to pollinate the main crop
But my friend claims his DK sets main crop in NJ. The fruit has been confirmed to look like DK.
Anyhow, most growers grow DK for its breba crop only, particularly in PNW area where there is not enough heat to produce regular main crop.
Breba fruits only on one year old wood. For mature tree, during dormant season, prune off the fruiting branches (canes) already produced breba fruits (2nd year wood). Leave the current year wood (first year wood) to produce breba fruits next year.
Tip pinching technique is used around July to stimulate new fig formation of the main crop. For DK, you do not want to do this. DK will likely produce main crip figlets after breba crop has finished. If DK main crop will never ripen, main crop production can be ignored.