Agreed 100% Koko. I think its a very poor design. I really like you're set up. Are you going to release a review on this product? If not, what is your take on it?
I might also mention that when I changed the filter, there was a HUGE glob of air filter oil in the bottom of the box. This obviously came from the dealership this way and made me madder than a fart in pantyhose.
To be honest...I never really had a problem with the old design. I never mounted it wrong, and I never had the filter fall off and have the engine breathing dirty air. I've heard of other people putting the cover on and the filter falling off but I attribute that to careless maintenance.
As for the pro-flow adapter. I really liked it. While I didn't have a problem with the old design, this one was a way to truly prevent it from ever happening. Unless of course I was careless and didn't tighten the filter collar down. This mount is more beneficial I think on a sport quad with the old 660's when people ran open lid in the dunes. Without the lid the filter would never stay in place and this solved it. We're never going to ride with out a filter cover on a utility quad. So if you pay close attention and are careful you should never have a problem with your setup.
I have always used a uni air filter on all of our bikes. I have tried many different kinds of filter oil. I have found the best one is Fab1 from Maxima. The worst one I used was klotz filter oil. No matter how much I squeezed and wiped I always had some run in the bottom of my air box when I would service it.
I have no problem with it at all. There will always be a debate on whether the k&N is superior to a foam or vice versa. I ran an Outerwear over the k&n (came as a pacakge with the proflow) and had no issues. K&N would not be in business if there filters trashed every engine they were put into to. Going back to some of my first comments...proper and careful maintenance will allow that K&N to peform and do it's job. does it filter better or flow more air than uni? I have no idea...I can only go on what I read. I will say...if K&N released a filter for the 700, I would use it.