I saw 'em in the early 80s... They were great, but he was very, very drunk. which isn't surprising as his rider asked for a case of wine and two bottles of vodka! (I know this as my girlfriend was on the Ents catering team at Leeds Uni).
Strictly speaking, mine isn't a Flybass anyway, it's the cheaper PB51. Same shape though but mine only cos me £500 new (no doubt some will say "U wuz robbd! U shoulda bought a 1961 Fender wot only makes one noise for £6k instead!" 😁)
Funnily enough, I'm loving mine! It looks far more interesting than yer Fenders, and I find it doesn't dig in at all, though I strap it on good and high... Great sound too from the EMGs.