Anyone had any long term use with a Daniel Winkler folder? Specifically an F3? Let me say I really like Winkler knives. After owning several of his fixed blades I decided to pony up the 450 bucks for an F3 folder. The first folder I received had major issues with the liner. Anytime the blade was deployed the liner would jam up on the opposite side of the handle. Along with the problem with the liner the blade grind was uneven and the pocket clip was so tight it was unusable. Emailed the folks at Winkler Knives and they promptly returned my email saying they were aware of the problem with the F3 folders and they would be happy to replace or repair the knife. Almost a month later I finally received my replacement. So far everything with the knife seems great (with the exception of a slightly off center blade when folded). The liner and lock up are great and the issues with the uneven blade grind and pocket clip are gone. I really do like the knife; great looks and blade shape, balanced, ergonomic, well finished, really a great knife (although maybe not 450 bucks great). Anyways I noticed one huge design flaw (in my opinion) with the knife....there is no stop bar behind the blade! The ONLY thing keeping the blade in place is the liner. Its almost like Spyderco's compression lock in that there is a cut out on the back of the blade that the liner slides into when the blade is deployed, keeping the blade from moving up vertically towards the spine. However, even the spyderco has a stop bar that will prevent any upwards movement of the blade. So far there is no blade play, vertical or horizontal, however given that the liner is titanium I am concerned that it will inevitably develop blade play, especially up and down play. Also, it does not exactly inspire a great deal of confidence in the knife with any type of hard use. So, with all that said I was wondering if anyone has any long term use of this knife or perhaps anyone who may share the same concerns as myself?