I purchased one from Randy...RIP.
Contact a 3ww member "muthey" here on the forum, here's a quote from him he posted.
"I want everyone to know the stem adapters are not gone with our Fallen Member Randy. He had me making them for him for quite a while and I will continue to do so. I just didn't sell them because that was his part and his design. They will still be available if needed and put in the parts store as well."
"HJ"
’84 YT60
’85 350x (423cc) with ’81 XL500 head conversion
’83 XR500 (628cc) converted 3 Wheel hybrid
’73 CB750 K3 converted 3 Wheel hybrid
’86 TRX250R chassis XR650L engine hybrid
’89 TRX250R (stock )
’90 LT500 Quadzilla
’85 FL350 Odysses ( water cooled head )
Lost (sold) but not forgotten ’80 ATC 110 (205cc on alcohol ) ’83 200x ( 222cc ) ’83 200x ( 185s eng ) ’85 350x ( stock )
added to the collection recently, (2) '70 US90 Aquarius Blue and '74 ATC90 Daytona Orange