I'm a tad confused T-Mar, but I'll chip in a few things that I do know:
#1: The '84 road machines were primarily Japanese-made machines from a single company. Other models in the lineup, such as the touring machines (my Alyeska, for one), were Taiwanese production.
#2: In 1985, production shifted to a Taiwanese manufacturer for most of the road machines as well.
#3: In 1986, production remained with that same Taiwanese manufacturer for the most part for that year, however, later '86 models are evidenced as coming from another Taiwanese manufacturer (complete with additional "MADE IN TAIWAN" sticker under the conventional, gold-lettered Raleigh sticker indicating the same location of manufacture. These frames display slightly different lugwork, minor variances in the paint, and most notably, an aero, cast binder bolt mounting on the seatlug (with "735" cast in the side - 73.5 degree lug), as opposed to the stamped-and-brazed tabs on the previous machines.
T-Mar, can you give me a one-by-one of each different serial number system in chronological order, and what each digit stands for in the serials?
-Kurt