Estes USS Enterprise #1275, Part 9, Pylon Supports & Dowels

I fitted the pylon into the pylon brace, then set it next to the body tube. The pencil line is the masking area to keep the filler/primer off the gluing areas. 

On the right - the notched end of the pylon is dry fitted in the bulkhead and marked, again for a mask. 

Here's the pylon masked for a shot of filler/primer.

After the filler primer was sanded -

The cut out is revised to fit the pylon, rounded dowel on the back side.