Fitting the heli frame into the fuse. I used the same method as Kip Newby making a template to transfer hole marks to the fuselage, everything was done inside the fuse. With the mounts installed on the heli, I installed the heli frame inside the fuse, ensuring the tail boom of the heli was centered in the tail boom of the fuse, and did NOT interfere with the rear retract operation (leave a little gap so the servo can operate without hitting the heli frame). I then marked two lines on the fuse bottom to tell me how deep to put the template. You can see the little dash marks in front of the holes. I laid the template in the fuse, lined it center and put the leading edge of the template on the dash marks, and drilled the holes from the inside using a dremmel.
The screws that mount the heli to the fuse...back screws will be about 3/4", the front screws will be about 1/2"...do not over tighten, they will crack the fuse, I used rubber washers which work real good. On the inside where the screws come through, I recommend putting #10 washers and epoxy them in place as Kip did...it just makes sense. Basically....that's the end of the build with retracts, other than putting the windshield and top glass in which is straight forward...use epoxy and be careful with the windshield...the paint jumps right off it. Of course, then you install the horizontal stab with epoxy, I used masking tape to hold them while they cured, doing one side at a time. Installing the tail skid involved drilling a hole in the lower vertical fin, threading it in with thin CA on the threads.

Next....what happend to my retractable gear system?