A PITA Leak

The last few months I have been restoring my 52 8N that included engine rebuild. I am almost finished with the body restoration stage but I have a thorn to deal with before I place the hood back on the tractor.

There is an oil leak in the right front of the engine where the oil pan meets the engine. It is not a big leak but it is big enough to get on my nerves, especially after an engine rebuild.
The oil pan has a weld on the right side about 5” from the front. At the top flange where the weld is, there is a plane difference of maybe 1/64” or less which is enough to cause a leak.

Because of this difference when I put the engine back together, I used the regular paper gasket all the way around except in the lower portion of the flange around where the timing cover meets. There I used gray RTV to compensate the difference in plane.
I thought it would work but it did not. I do not know if the RTV got shifted during the installation of the oil pan or it was just a bad idea to begin with.

So I am thinking that my options are either to find another oil pan (which it may not be easily found locally) or take it to a machine shop to level the top. I guess this should be doable, maybe I have to slightly enlarge the back 6 holes to meet the bell housing, but other than that I think it should work.

What is your opinion, or do I have other options?

I'm thinking trying to patch this is going to be a problem (you already tried once). After doing all the other work, I think I'd be looking for a used oil pan. A quick look at ebay shows that they start at about $80 (including shipping) and go up from there. I feel your pain -- we all hate to spend money on something like this.

Ouch. Sure wish that I had seen this a week ago. I just scraped 2 engines with welded blocks and good pans. Look around.
Someone must have one for a fair price.

I should have a good pan that's off... If you applied the RTV correctly RTV is not the problem...

(quoted from post at 00:15:26 11/22/18) I'm thinking trying to patch this is going to be a problem (you already tried once). After doing all the other work, I think I'd be looking for a used oil pan. A quick look at ebay shows that they start at about $80 (including shipping) and go up from there. I feel your pain -- we all hate to spend money on something like this.

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Yea, you are right. Ebay would be the way to go, prices are reasonable.