Oil Leak

[1994Maxum2700SCR]

Hey everyone,
So i had an oil leak last year and we tried to locate it every time we went out. It seems to be pressurized leak that only comes out when the boat is under load and when it has been running for over an hour. We FINALLY found it coming from somewhere along the dipstick tube, and possibly where the dipstick tube meets the oil pan. We patched up the area with some putty-like epoxy (i think it was called RCV high-heat or something along the line). The boat has since been put in the water and took her for a spin yesterday and i think its still leaking from the same area (only went out for like 4 hours, but its definitely not leaking anywhere near as bad as it used to). Going to remove the soiled oil pads, shop-vac the bilge bone dry, and lay new pads to find out for sure if she's leaking.
If the leak persists, I'm going to take the manifold off and really get in there to see whats going on.

Has anyone else had this problem? or have any advice?

Thanks,
- Joe

7.4L Merc single engine/bravo 2