King Tiger Tracks

Exactly. There were some unusual combinations out there.

I did some research and I did actually find a couple Porsche King Tigers with the 18 tooth sprockets so what you're saying is accurate.  I saw a picture of the KT with the big 11 on the side and it looked like it had the 18 tooth sprockets but I think it just boils down to what vehicle you're buiding.  

In a nutshell:

Very early: (pic above) 18 tooth

Mid (most common by far): 9 tooth

Very late: 18 tooth

Here's another fly in the ointment: due to supply issues, it's not uncommon the see 9 tooth sprockets and the very late pattern tracks, but the 18 tooth sprockets would not work with the mid-pattern tracks. This is all slightly over-simplified, but boils down to whether or not the connecting link had holes for sprocket teeth.

I'm thnking thats what I got then.  I didn't know that early versions used the 18 tooth sprocket.  I always understood that early versions used the 9 tooth and later versions used the 18 tooth.  That seems like the same set I got.  with the connecting pins and the connecting track in the middle.  I also seem the same style links on the narrow transport tracks on the "Final Version" KT but those were just limited to 1 version I'm pretty sure.

Keep in mind, very early and very late versions used the 18 tooth sprocket, and there are three types of combat tracks.

I agree about the cumbersome assembly, the tracks on the KT in the pic below almost drove me nuts, even using the nice jig Friul supplies.....

You can get an idea of how many pieces make up the connecting links be looking at the track where it wraps around the idler. These are the initial version, and were designed to use the 18 tooth sprocket.

I think it maybe or either the Dragon Tracks are for 'mid-early' vehicles.  I've built the Dragon Battle of the Bulge KT which that the single piece connecting links and the Tamiya Link Tracks used on my KT had the same type tracks as well, and both were earlier production vehicles becuase of the 9 tooth drive sprocket.   But I've built Dragon's Jagdtiger Porsche kit which had the same t ype tracks as my Fruils.  so I think they are correct.  I was just curious because I compared them to the Magic Tracks and they came with the laster 18 tooth drive sprocket.  is why I ask.  I just know they're taking a long time to assemble, I worked on them over an hr last night and only got about 15 links done.  

The drive sprockets maybe an error which I'll just save, the tracks do fit the kits drive sprockets.  

Sounds like a mis-box by Friul. From what I understand, the very early tracks went out of use fairly early, since they were so easily thrown; apparently the multi-piece connecting links twisted badly. Not having looked and assuming the Friuls you have use a solid (no teeth holes) connecting link, I think you could use the Dragon 9-tooth sprockets with the mid-production Friuls and be accurate.