Properly sealing timing cover to oil pan.

So I have my back end of my car up on ramps to bleed the rear brakes and I’m also working out the tuning/timing issues that I’m being helped with in another post. Now I have again noticed that there is a good amount of oil leaking out from the bottom left corner of the timing cover. The area where it marries up with the top of the oil pan. I though I had it fixed by taking the front of the engine apart and pulling the timing cover then reassembling. I flattened out the bottom flange of the cover and laid down a new gasket and was very liberal with the atv sealant. Now it seems to be leaking again and I dread having to pull the front of the engine off again. Is it better to just get a better used timing cover with a nice flat bottom flange? I’d did notice that on this flange there is another strip of metal welded in two spots to the flange. It isn’t totally flush. You can see the pic of what I’m talking about in the 3rd pic in the first post. Is this a problem that many have had? So damn frustrating. Im hoping that the *** end of the car being up on ramps is exacerbating the problem and if it was level it wouldn’t leak? It didn’t seem to leak before I raised up the *** end.