I know this subject about Wheel's past is indeed a strange one. I mean the anniversary part where they only take consideration of the 1983-present stuff. But i mean, even when Pat talks about years past he does sometime make note that Chuck was there first, and Charlie has been there since 1975 and stuff like, that would confuse the infrequent viewer. However there would be less questions asked if they took account the start of wof in 1975 rather than the relaunch in 1983. Even in the opening for the 3000th and the 4000th episode, they use an opening from a show that from a avid viewer is definately not 1983, since there is no turntable (which they added in 81 or 82), and they use a section of the 'old' network theme, that was never used in syndication, probably because it had Charlie's voice over it rather than Jack's.
Just me rambling
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Mark