I just bought a b16 head and head have dual springs and retailer how would I know if there good any way I can tell and while taking them off I seen a lot of them the inner spring come out soft but on a few of them they kinda struck inside of the outter springs but with a little force they come out but it’s this normal or they bad? And any way by looking at them can I tell what dual spring are they and retailer or no way to find out