Which brand seal did you use this time?
I've had several defective seals that wouldn't touch crankshaft surface at all, no sign of contact from the seal lip on the crankshaft after removing the seal holder
I ended buying the newer more expensive ones made from a softer material and they will leave a mark in the grease I use to lube the crank seal area on the cranks, no leaks so far on two that I had to fix
The oil can leak from the side seals, the main seal or from under the cap to the block also To fix it properly you need to figure out exactly where it is leaking first
Good luck, let us know what you find out to fix it , that will help others on here later