KRW hub puller question

[34fordy]

My KRW puller part that slips over the axle threads has no threads. It just slips over the end of the axle threads per the directions. A fellow member sent me a picture of the corresponding part from his KRW puller with threads and he says he bottoms it on the axle. I have noticed that Vintage Precision recommends to back off their threaded axle protector 1/2 turn. Did KRW change this part at some point? I was wondering what you other fellows have with your KRW pullers. Pictures enclosed.