Been my experience once things get to Sam, they're handled quickly. I hope he can get you a timely answer.

Point of diminishing returns on chasing the missing piece in my order. Not worth worrying over - the time better spent working. I received enough to get the job done, just no spares, but shouldn't be needing them anyway. Ironically on my next order, the spare rear knucks had pb retainers in them so I do have spares now. Sometimes it all works out.....