Unfortunately, it is far too common to purchase a part and for it to be either bad quality or doesn't fit at all.
Most of the parts purchased are not fitted to any bike for a number of years, they purchase it on faith, believing it will fit, when the time comes to finally fit, they're only left to discover they don't and it's too late to report anything to the seller. That's why they believe so many are good and refuse to believe they don't fit.
I was going to purchase these shrouds also, only didn't because I have had bad experiences with Wassell and a few other brands out there (MCA is another). Also, thanks to Lee for posting his experiences, letting the BSA community know and sorry you had to go through this.
But reading this thread, BBB was simply avoiding the situation and the way they handled it I know now not to purchase anything from them.
I have been on the hunt for a good condition pair of shrouds for approx 4 years, the last pair I found was on eBay UK, maybe 2 years ago and was out bid last moment. I was lucky to have found a good condition original pair, waited 9 days for it to end, it finished on Saturday and I was the lucky one. The price they went for was high, sure it's worth it and comes to show people are willing to pay.
Only problem is, they're in UK, the seller was not willing to ship to US, had to ship to a trusted family members address in UK and for them to forward it to me in US.
I know I won't be fitting them for a number of years and I know I have a pair that is more than likely going to fit when the time comes to perform final assembly.
Lightning Spares, they were ok, but the last year of trading with them, they were rude and the parts you can tell they cut back on quality.
Barleycorn, my last purchase I requested polished, only to be sent unpolished items, sent an email to inform them and they didn't respond. They could have at least reimbursed my account for the polishing fee for the next purchase.
Don't even want to get started with my problems with draganfly.
CPC Engineering on the other hand, they go out of their way to produce the parts I need, they're of outstanding quality and will continue to use them.