As far as cutting the hatches out. I have heard of guys using a kind of sewing thread ( nylon, I think). They drill a small diameter hole and then use the thread as a very mini coping saw. I want to try it on my HL KT, just not sure of the best type or brand of thread to use. Anyone out there experienced in this technique, I would gladly like to hear from you.
I also look forward to your build. I consider the Tiger my favorite Tank.

Jim