Hi All
I recieved my Viper approx 6 weeks ago and have not seen this posted before there is a blind nut in the fin approx 25mm from the front carbon post and also a corasponding hole in the fuse the photo and the arrows should be self explanitory this provides 2 hold down points and makes the rudder very solid it is not mentioned in any instructions ( this may be a new mod)
Also if you trim approx 2 mm off the trailing edge of the fin as per arrow at the hinge line you do not need to use mounting blocks for the hinges as the hinge centre point is corect and all the paint lines line up. hope for those that are interested the photos are self exsplanitory.

Cheers Bronte