Keith:
Regarding the "early-late" KT and Dragon's choices...
Just my 2 cents worth: IF you have done a fair survey across the internet and viewed a bunch of photos, and maybe you have gone around and viewed pics given in some of the nice "wartime survey pic books" - maybe such as various volumns in the Concord Military series - and you have NOT come up with much info to actually direct you to go to feature and detail "A" versus "B"... I think you will have given things a fair inning! I personnally would go with pretty much whatever I like, and get on building.
That is: you have NOT seen any definitive photo answer to a specific detail question. This means that little or no real photo evidence lies around to be easily found, for that specific item. As we are dealing with details on actually uncommon machines used by a vanquished foe in a war which ended 67 years ago, one has to happily accept that there may be no actual RIGHT answer for some questions! I get increasingly dubious when folks pull out the very last reference or note somewheres and toute this as being the real truth. NO. Probably it's just the last item pulled and one ends up constructing an argument that this one must be the real authority...
In a different vein: YOU will never know which of these rare "final" authorities offered is actually correct. So, IMO, it is not worth any emotional energy to get vested in something which becomes increasingly rarified and esoteric! How do we actually sort out whether a crew or shop altered something, etc.? German Tigers and KT were pretty much hand-built and individuals. At some point, we must step back, remember that we cannot achieve absolute knowledge nor accuracy, and have fun and build our model!
My suggestion (and how I would go on an upcoming KT build for this campaign) is to aim for getting things pretty much right, and not sweat some tinier and less-well-documented versional details! I want to get fairly accurate and have fun getting there! That's me, of course!
PS: Dragon does this fairly often - offers choices without explanation. Sometimes one must wonder where they get their "information" as to the offered choice... so we ask these questions here! But I'll bet that sometimes these Dragon choices become red herrings- maybe a part of marketing! Offer those guys something to stir around and angst over and they'll feel they are getting more bang for their modeling buck!
Bob