Careful who you ask

I returned this parsha to the sofer. It was pretty clear to me that it was pasul, thanks to the metayeg (which is a topic unto itself). Supposedly he asked a local mot'z with expertise in stam and was told it was kosher and lechumra he should ask a tinok. I was quite taken aback. I send the shaila to Rav Mualem and showed it to another posek, a talmid of Rav Friedlander like myself and in no uncertain terms they agreed it was pasul. Had this posek said a tinok could be asked for a bedieved, that's one thing but his psak was off the mark.