I have an issue that Im hopping to get help with. I have two pairs of Juliets. The first being second gen titanium, and second being new carbons from what Oakey just sold on web site. I just received some lenses from Walleva and when installed in the carbons are loose and will come out with pressure applied. But installed in the titanium they fit perfect. I emailed Walleva and they stated that the lenses should fit. Are there any differences between old second gen titanium and new carbons( 04-148)?