Well I have primarily lurked in the shadows and gleaned a lot of information from the group for the last 2 years largely because I am a small business owner and have little time: but thanks to the economy I now have lots of it. Wanted to know if i could give back somehow so any ideas that you have for things not being made by honda man or that the group needs let me know. I have made three of these adapters now by hand for my various antique bikes 22mm lets you buy any petcock you want off the shelf so you dont have to spend 128 bucks on a pengle and then another 28 on their adapter that only fits their valve. I think I could sell these for about $25.00 and could maybe make a master kit allowing you to adapt to any of the old sizes for about $60.00 but it would still only end up producing one bung Thanks guys love this group and love my old bikes (74 cb550, 75 gl100, 76 cb750A, 76 kz400 ) the cb 550 is still my top favorite have owned it since 1985 it sat in my garage for 16 years and then my brothers started bugging me to get a motorcycle