Natural corks leaking

[wineview]

Here is the link to the corks in question

https://www.amazon.com/dp/B0064GW1CE?ref=ppx_yo2ov_dt_b_fed_asin_title

I was not aware that the corked bottles should be upright for a few days. I've used natural corks before and the process was as the last time but I didn't have any leakage. The wine stored in a carboy for 5 months, bottled and stored in the same temperature. I use italian floor corker.

I leave my bottles upright for a week before placing them on their side. Also never wet the corks with sanitizing solution. I mix a strong solution of kmeta ( 2 cups) in a small bucket with a cover. I place the corks in a vegetable steamer on the bottom which is above the solution. Cover the bucket and let the fumes do their thing for an hour or so.