Estes Maxi-Brute Honest John (Kit #1269), Part 8, Nose Cone Fitting

I did notice a raised area on those sides of the fitted nose cone.

Look inside and find some thicker plastic down the inside seams. 

I wrapped some 220 grit around a small bottle and lowered the bump.

Here's the fitted nose cone - 

IT'S BIG!

The top of the lower NC section is flat. 

Holes need to be made in the bottom to attach the 1/4" wide shock cord.

Notice I marked the hole locations before drilling into the plastic.

TIP: Don't drill the holes on the molding seams. That's a weak point (thin plastic) in the nose cone mold.

The instructions suggest drilling the holes by spinning a knife tip.

Well - 

Use an old knife blades to start the holes. 

Then, I switched over to a half round diamond file. 

You can also use a Dremel tool to make the holes.

The holes are around 1/4" diameter.

The sides should be smooth. A sharp edge could wear through the shock cord.