Lovely looking bikes. For me, let down by a too-shallow head angle. I wanted one for ages, my mate had one in '91 but rode street on it and cracked the headtube/downtube weld. He sold it to a teenage racer who got it fixed and painted, set it up with pukka parts. Looked ace. BB felt a bit low too and head angle felt about 70degrees !!!
The later auburns looked steeper up front so mabye they changed the head angle over time..??