I have a 54 under construction. I'll post the Rocksim file when I get home.
I used the Slimline retainer with the internal snap ring, but I had not seen the Lock N Load retainers which have a bevel on the front edge. With the Slimline, I'm having to build up a fillet to blend it into the airframe, but with the Lock N Load, it is already done for you. Live and learn.
With either retainer, it will be necessary to stand off the rail guides to clear the added diameter. I'm planning to use the ACME conformal rail guide with the offset for a fin can.
I installed the fins and then laid in a small fillet of epoxy. Then I used laminating resin to apply a 1" wide carbon fiber reinforcement to the intersection between the fin and airframe and topped that with carbon fiber tip to tip. The CF is 4oz/yd. The result showed the weave, so I've used a lightweight epoxy paste filler to fill the weave and feather the doubled region. I'll probably end up painting that area black. I had hoped to be able to leave the weave of the fabric visible, but it required too much filling.
