roebuck, part of the reason I want you to read that oil seal installation paper carefully, is that we still need an explanation for why your two previous seal installations leaked badly. I'm concerned that you may have put the seals in backwards. Here is the lubricant flow diagram from the workshop manual:
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In what seems a rather bold design decision, Honda has elected to direct the full output from a Hobourn-Eaton (trochoidal) oil pump up through the hollow camshaft, into the space between the ballrace and the top oil seal, under pressure. From there it trickles and splashes down to lubricate the remainder of the engine. This means the top seal is actually under pressure from inside the crankcase. It can only restrain the oil from actually pumping out of the top of the engine in quantity, if the oil seal is pressure-tight.

Here is a typical double-lip, spring-loaded oil seal, which may be similar to the one Honda uses:

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The red oval shows the "dirt lip" side of the seal. This side must be on the outside, not the pressure side, of the seal. Its only function is to keep crud from getting close to the "real" lip and wearing it out. If pressure is applied to the dirt lip side of the seal, it will simply lift the real lip out of contact with the shaft.

The green arrow shows the side of the seal that must face toward the source of oil, and pressure. The more pressure is applied, the more tightly the seal will seal. This pressure side of the seal must face toward the ballrace.