Remove the air intake snorkle from the right side of the air box (just pulls out). Look at the very top, front, center of the engine block directly below the fan motor. There is a 3/4" tall by about 3/16" diameter nipple just at the parting line with the timing chain cover.
This nipple SHOULD be capped as part of the conversion to the tank venting going into the air accumulator.
Thank you Lee - I took a look and it is well capped. As always it is a pleasure learning another thing or two about the K