..............Might not be a bad idea to include a couple of the cast boolits with the mould when it goes back. That way they can positively SEE the results are wrong and 'off spec'.
Doesn't matter if it is a group buy or not. It met Lee's requirements and Lee's price was paid, same as buying one in a store. Richard Lee makes several statements about how their moulds are so precise in his reloading manual. He says they can guarentee a slug better then .001" of being perfect and .000" (nothing) to .003" oversize of print.
Definately send'em back if they don't cast correctly!
..................Buckshot