de Buyer Mineral B element wok pan 28 cm, 5618-28

This is my 4th Mineral B element pan and I was simply delighted with the 3 of them (frying, pancake and blini pan), delicious meat, pancakes and omelettes, crispy outside, soft inside with very small amount of oil. But this wok didn't meet my expetations. I seasoned it before use like the other three, but there was strong metal smell and flavour present, (I didn't cook any acid vegetables or put water inside), I had to season it three times before it disappeared. Even with the small amount of food, it "loses strength" immediately, meat or vegetable don't get caramelised like on the other pans, just remain pale and cooked and than start sticking to the bottom and burning. It's also rather unstable on the stove. I've used it 10-15 times to "give it chance", but the result is always the same. All in all - quite disappointing.