That's a similar problem to what I was experiencing as well. Posted on the same day, over here http://www.motoredbikes.com/viewtopic.php?t=340
This kit was also from dax and purchased early december (06). When were the caps updated? The "new improved" cap listed on the thatsdax site looks exactly like the one that came with our kit and performs as stated in my post, and in the above post. What is the difference between the two?
I figure I may just find one locally.
-edit- 4 hours later: Very Locally! I actually had one within 3 yards of where I typed the above message. It's an old moped cap that is a quite bit higher quality and works perfectly; all the tilts, vibration, and fullness I want....no seepage so far.
hey this is Heath, co-owner of the bike with Ethan. the moped cap works great. we rode the bike quite a bit today (when we should have been working) and it did great. it's a cap off a Garelli. don't know if they are all the same or not. as a side note, it's a much more attractive cap as well!