ASP MMX Jayhawk Build, Part 6, Shock Cord & Engine Block

The supplied Kevlar shock cord is longer than you'll need.

I got a better idea of the length slipping the loose end through the body tube, letting it hang out the back. 

1/4" of coupler is cut off and used for the engine block. 

Tie the Kevlar onto the engine block.

Mark a length of remaining coupler at 3/4" to use for the engine block placement. Glue the engine block into place.

The small launch lugs are glue in line.

The nose cone was glued in place with Fabri-Tac.

As it was setting up, it slid up, leaving a small gap at the shoulder lip.

I filled the gap with CWF followed with a shot of filler/primer. After sanding it down the gap was pretty much gone.