@oysteib
I think *les- and *leΗ΅- (notice the accent on the g, so palatalised? /gj/?) might be the same root reconstructed in two possible ways. I can imagine a /gj/ - /Κ/ - /z/ - /s/ all being close enough that different dialects of PIE might have one or the other in the same word.
We might only have both reconstructions *because* each makes more sense when derived from different known languages.
#NotALinguist tho, so it's speculation.
@petealexharris Yes, I'm thinking something like that as well.