Spokes are only wrong length if they bottom out on thread or show thread when fully tight. It sounds like they're too long. May not have been noticed before if its now got more tension than before in it. But that doesn't really follow if its not very tense.
I don't imagine spokes can stretch to anything like a noticable amount. If you're up to it it can't hurt to strip it and rebuild. Or just do a new measurement and check against spokes currently in there.
Spokes are only wrong length if they bottom out on thread or show thread when fully tight. It sounds like they're too long. May not have been noticed before if its now got more tension than before in it. But that doesn't really follow if its not very tense.
I don't imagine spokes can stretch to anything like a noticable amount. If you're up to it it can't hurt to strip it and rebuild. Or just do a new measurement and check against spokes currently in there.