Just thought of making people aware of the fact that 4th Gen Design offers to upgrade your older Mongoose models to incorporate the latest features of the new 3.6 model, most importantly the addition of the so-called "deadbolt locks". See for details: http://stores.4gdphoto.com/-strse-HA...Categories.bok

I sent them my Mongoose 3.5a in early December and used the upgraded version in Germany for a few days earlier this week. In short, I love it! It entirely removes one of the main disadvantages of my pre-upgrade Mongoose, namely that the lens tended to fall forward if I removed for instance a 1DMkIV and 1.4TC from the balanced setup no matter how much I tightened the adjustment screw. With the upgraded version no problem at all.

And best of all: the upgrade is FREE for the Mongoose 3.5 models. JR