oil leak from oil pan / timing cover junction

Hello,
I recently replaced the long block for my 2001 mercruiser v-6 4.3 gen+ engine. It runs good but has an oil leak. It seems to be coming from the top of the oil pan near the front main seal right where it joins with the timing cover. On the right side as you're looking at the engine from inside the boat.

When I installed the timing cover and oil pan on the long-block, I used the oil pan gasket that came with the rebuild, I presume not a special marine version. Also, I used a timing cover for a standard chevy 4.3. Is that ok, or should I have used the mercruiser OEM parts? Could that cause the leak? I did apply the RTV sealant as it instructed in the manual.

Any other reason why it would be leaking from there? I don't think the oil is under pressure at that spot. It's a steady leak.

Re: oil leak from oil pan / timing cover junction

or should I have used the mercruiser OEM parts? Could that cause the leak?

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Nope,... That's kinda always a Problem point....

Unfortunately, you're gonna have to Pull it,+ fix it...

I believe Fel-pro, or GM has a really nice 1pc. silicone based rubber gasket for those...
There's Nothin' Marine special about it...

Re: oil leak from oil pan / timing cover junction

Thanks for the reply.
I believe the gasket I used was a blue silicone rubbery one. Is there anything else I should do differently? Apply more RTV?

Re: oil leak from oil pan / timing cover junction

Is there anything else I should do differently?

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Donno,... Can't see it from here...

Try to diagnose, EXACTLY where it's leaking as you take it apart...
It'll hopefully become Obvious as you get there...
Then you'll Know where ya screwed up,...

Apply more RTV?

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Donno how much you started with,...
But,...
Too Much sillyseal is Way Worse than chasin' a little oil Leak....

Re: oil leak from oil pan / timing cover junction

Not to make your day worse, but here's a post with similar issues:

achris and his cracked timing cover leak

He even posted again that another engine began showing similar results and leaks.