I found the missing part (from 3:07 until 4:05) on some bootleg-website and was able to catch the streaming. So I could fit it in. I think the album side would have be too long if they had included it (get yer ya ya’s out). I don’t see any other plausible reason for omitting it. Notice that the original vocals is an overdub. Of course the inserted ‘new’ part has the original vocals (Kleermaker)
Don't you think it's sometimes wise not to grow up?