Yes, got a panzer IV minus turret passed along to me several years ago, so I looked for a conversion to do something with it. Rather simple, unimpressive conversion that I bought for $7.50 just to complete the kit.
I should mention that these are Tamiya 1/48 scale armor kits. I bought the King Tiger a long time ago when it first came out. I know a little about Tigers and knew this particular version requires zimmerit. I was tempted to try the hot knife method, but that it would not work on the diecast metal lower hull. I set the kit aside for quite some time because of this.
I had forgotten about it until Great Models had an end of summer sale in September. The Cavalier zimmerit set was mislabeled as 1/32 scale, but I knew it was for the 1/48 scale Tamiya Porsche King Tiger because of the kit number. It was $10 for the zimm, but worth not having to mess with a hot knife or putty.
I bought the CMK conversion at the same time. The CMK instructions are fairly worthless, fortunately, I have the ancient CMK bergepanzer IV that is a rebox of the old 1/35 scale Tamiya Panzer IV Ausf H. That set of instructions helped to determine where the 1/48 scale bits should go.
This is an exercise in reducing my stash of kits that are probably not worth what I originally paid for them if I tried to resell them, but are pretty good kits regardless. I am quite impressed with the King Tiger, I just wished it was the production turret so I could forsake the zimm.
Yes, this is my first experience with Cavalier zimmerit. I've used Eduard PE zimmerit in 1/72 scale, but have not used any in 1/48 or 1/35. The left side of the turret included a Cheshire Cat smile-shaped piece of zimmerit to cover the bulge. I had a few gaps along the seam where the bulge and turret zimm side sheet met. That's the Squadron green putty you see in the photos.
I used green instead of white so I could see it better on the light gray zimmerit. I thought white would be too hard to see when it got down into the grooves of the zimmerit. At least with the green I can see it and clean it up better. It was a total PITA to fit that bulge. I used hot water to make the sheet more pliable so it would conform to the bulge. I had similar issues with the front mantlet portion; it used three vertical strips of zimm sheet. I placed the center strip then the right and left ones. Again, a royal PITA to work it. More green stuff on the mantlet to see where I attempted to cover the seam between sheets.