Recently acquired a like new Browning 1885 BPCR in 45-70. The hammer will go back to full cock position but when trigger pulled will only fall to the half-cock or safe position. The hammer will not contact the firing pin at all. Removed stock, flushed and lubed visible parts, etc.. Anyone have experience with this model rifle that might save me having to ship it back to the factory? Being a pretty heavy firearm I do not think it will "travel well". Thanks for your help.