What type of wood is it? red glue laminate, white glue laminate or solid? I've dealt with a few rescues where the previous owner used Easy-Off. Did you do anything to the stock before applying the feed and wax? If it was mine, i'd strip off the feed and wax....i haven't had much luck with it personally with really damaged stocks.
Here's a process i've used in the past on red glue and solid stocks:
First, take off as much of the metal parts from the stock as possible. It makes life easier. Next, you need to make sure the previous owner properly neutralized the oven cleaner. In my experience, oven cleaner has a nasty habit of hanging around in the wood and will create future problems. A good scrubbing with a soft cloth and a gallon of white vinegar works. A soft toothbrush works well to get in the recesses. To be safe, I gave my stocks two scrubs inside and out to make sure I got everything. Let it dry for a day or two between scubbings. I rinsed off the stock with water after the 2nd vinegar scrub. Then set the stock aside and let it dry out completely for at least a week. The goal was to give any remaining moisture in the stock a chance to dry out. Only after the stock is completely dry, then you can reintroduce oil back into the stock. The oven cleaner method of stock stripping is extreme and leaches of the natural oils in the wood leaving it dry as dirt. I used a 50/50 mix of boiled linseed oil (BLO) and turpentine and rubbed in in with a clean rag. I had one stock that was really gone and increased the turpentine to get the BLO to soak in deeper. Pure gum turpentine worked better for me...i didn't have much luck with the new low odor environmentally-friendly turpentine replacement . The thinned BLO penetrates the wood much deeper than straight BLO. I coated the stock and went back over the dry areas in a couple of minutes and kept doing it until i got to the point when there really weren't any more areas that were dry on the stock. i let it sit for a while and then wiped off anything that seeped out. Don't let the BLO dry on the surface...if you see beads of thinned BLO seeping out just wipe them off before they dry. Once, the beads stop forming and the wiped surface looks dry. Set the stock aside and let it dry completely. I generally leave it for a couple of weeks before i would consider doing anything else. The longer it sits, the more the smell of the BLO and turpentine dissipate. It's a slow process but if you rush it, things tend not to go well.
IMO, white glue stocks are a heck of a lot trickier to deal with.
