Right - had another look inside the guts and assuming the date ring thingy has the year arrow on the inside then it's an '85
Also had a sniff around on some other sites and it seems the "RS" also cam in an unpadded version with a shit load of holes for the haro fusion range and also without so many holes for diamond back ?
Ah well it's nice and comfy and if it's an '85 that's era correct enough for me on an '84 rider