Do what John Wyatt said a light wipe down with Mineral Spirits and wipe dry. This will take off some dirt. Then mix 30% turpentine and 70% BLO. Rub it in real good and let it set over night. If tomorrow its kind of tacky use 0000 steel or brass wool and lightly polish. The turpentine will lighten the stock a little plus helps in rubbing it in the wood. If after setting over night and it isn't tacky just polish it with a clean cotton rag. Show us pictures when your finished.