No problem, I'm glad it helped. Thats the part I meant for sure. It should have a small screw-hole drilled in to the side of it. This pic might help but it's rather small. I'll also add some of the one I'm building asap - but it's all at the 'dry-fit' stage at present.

There's another KT thread somewhere on this site with a few good pics and the guy building it really sounds like he knows his stuff. I'll try to link you to it.
Nice to talk to you!
Mike.