After I make a pair of spur straps if I dye them they always come out stiff after drying. I have tried oiling them before and after dying and still the same results. I tell the local leather supply shop about the problem and she says that should not happen. Also I should not be using any oil. She sells me Fiebings leather dye.Should I be using the oil dye instead? The leather feels dried out after I dye it. I use about 8 oz. skirting leather. Thank you.