I didn't take a picture of gluing in the engine mount.
It's not easy to do, it tends to roll around a bit.
Here's the instruction illustration to show how it is glued.
To see the old Centuri Mach 10 instructions: CLICK HERE
Here's the model up to this point. I have yet to glue on the bottom tank assembly.
Along with the copy of the Centuri instructions is a generic page showing how to swing test a rocket. It isn't needed and would confuse a first time builder. You couldn't swing test the Mach 10 if you wanted to.
This has to be one of the stranger illustrations I've ever seen in a kit. I believe it was lifted from Sunward instructions.