"When I first got this I had high hopes of it being a good bike,and someone told me how he had put all modern technology on it instead of the clunky Shimano lx items."
"Well so far the lx equipment has behaved impeccably and I really can't see the point in replacing it."
That was me, kinda, I have an 88 that arrived like this:
The Exage stuff on it was mostly worn out, the hubs needed servicing/constant re-tightening, the teeth were worn on the chainset, the BB was gone and the brakes and mechs had excessive play in them, I tool all this stuff off, and then realised that the stem and bar were steel too, so I took them off and did some investigating. As it was the same frame and fork as the RB1 which was specced with higher end kit and I was replacing the kit on it anyway then I figured I would rebuild it with Shimano Sante/600, alloy Nitto bars/stem/post and generally make it (more-or-less) period correct, but higher end. As a side effect of all this the bike will be lighter, that was not my main intention though, I have never built anything with a weight in mind (except my own!).
The other RB2 I have came as a frameset and was destined to be a winter commuter, it was, as it turns out, a poor choice as I couldn't make the mudguards I wanted to install work with the fork crown or with the modern long arm front Tiagra mech. This bike has served me well with a Tiagra 4700 groupset and period wheels/finishing kit, and it does ride very nicely, I will be replacing it with something more Audaxy this summer and move the stuff over.
Anyway, yours looks like it arrived in much better nick and I'm glad you're getting a chunk of use out of it, they really are very smartly designed bikes.