Hello Chris and welcome. Good to have another mini enthusiast aboard. I can relate to your history in the fact I also mowed grass to buy my RM80B in '77. $2 a yard I was getting and by the time I'd saved the $499 the RM80C was released. I simply could not afford the extra $70 or so
In hindsight I didn't miss out on anything except an extra gear as my little B was every bit a match for the C
I seem to have reverted back to the smaller capacities and mini's. After spending the past 30 or so years riding and toying with the 400 the mini's and 125's to me feel super feather weight and are a absolute ball to ride..I have to admit due to time/work constraints to ride the 400 anywhere at speed dishes me up a severe working these days and it's now all but resigned to dirt track where my piddly stature isn't thrown around like a rag doll
My little collection includes RM50N, JR50C, PW50, Italjet M5, '83 XR/YZ80, RM80B (x2), RM80X, RM80Z, RM80D, '78 DS/RM80, TM75L, TS/TM50R and the obligatory 'real' vintage mini with lawnmower engine. Some pics of your bikes would be nice. I really feel with the amount of mini owners here, the forum could do with a mini section of it's own, will have to ask the Master nicely me thinks
cheers Doc