My 9 year old Canton 15-660 (7 qt) has decided that no amount of sealant is going to hold back the flow. After a spirited cruise yesterday and a 30 minute cool down, I came back to my car to find 1/2 quart of fresh Kendall SAE 50 on the garage floor and a steady drip from the back of the sump. Just glad it was seepage and I didn't split the whole thing while on the road (at speed).
Am I fooling myself that these leaks can be repaired from the outside? I'm going to pull the pan either way (after my previous bearing swap, and then the subsequent fuel pump eccentric failure, I'm a pro at this now...

). But I'm not a welder and the portions that are leaking are below the internal baffles. So they can only be accessed from the outside.
All opinions welcomed, thanks!
-Dean