Yesterday I weighed the bar. It has 7kg with threads which means that I have lifted not 75kg but 77kg. 20kg x2 (x1 on each side) + 5kg x6 (x3 on each side) + bar 7kg = 77kg. I immediately corrected the amount in my previous posts.
Also yesterday I lifted 77kg again and ten minutes later repeated it. I feel maximal pressure but without any cheating. 80kg is just 3kg more – 1.5kg on each side. I will try this Sunday. Not a gram over because it would be exaggeration and I could injure myself.
One more important thing: I had 67.7kg yesterday which means that I am lifting 10kg over my body weight.