Len;
Hey! That old beast is coming out pretty sharp!
Tamiya has a long (and IMHO, well-earned) rep for good engineering and solidly-designed kits. I've just worked up a couple of really old Tamiya stashies... dating back to ca 1972, so about the age of yorn! - an old Horch & flak 38, and that antique Wirbelwind monster. All in all, while they lack some of the detail which comes out of modern kits, they went together well and actually look sorta "the part"!
Just for viewing pleasure and whatever amusement folks can get from it... here's my old treasure Wirbelwind- almost complete. I did tweak details with styrene, put on some old Dragon link tracks, and added some paste zimmerit. The errors, of course, are all mine. The kit was actually a lot of fun to put together (after, as you found, too, several Nr. 11 blades and some sand paper!).