I'm trying to convert some old-school adventures for an upcoming game.

I'm trying to convert some old-school adventures for an upcoming game. I've noticed there isn't a strict rule on converting static DC's into something more appropriate, or at least, I haven't seen the rule.

For example, in Sailors on the Starless Sea, there's a large column of stone that the players can lift with a DC 30 Strength check. How would that be ruled in Whitehack?

Or, a wall that's a DC 15 to climb?

Should I just eyeball it?

Thanks