-Leorio was actually the one who opened the door to the hut where the Guards were living. Each door weighs 200 kilograms as you know, so both of them are 400 kilograms. Leorio opened both.
I don't think this is actually wrong, but Gon couldn't open the door with one hand when they came. Just liked to mention this.
-Just going to mention this. The shoes were 20 kilograms and the vest was 50 kilograms. Those two were just starters, and they're going to increase it every time.
-Going to mention this too. Gon, while his arm was still broken, he could easily jump with the vest being 150 kilograms, but the shoes' weight wasn't stated.
-This was removed I think. In the first two weeks, Leorio could open the first gate, which weighs 4 tons. Each door weighs 2 tons, so in total 4 tons.
-By the end of the month, when Gon was healed, he could open the first gate which is 4 tons. Kurapika could open the first gate too, have in mind this was without his Scarlet Eyes obviously. Leorio managed to open the second gate, which weighs 8 tons. It was stated in the manga and anime that Killua opened the third gate which weighs 16 tons.