New weight discs

Paco brought over 4 homemade discs for my weight set.
2 x 14.5 kg and 2 x 18.5 kg. When I started putting the discs on the scale I realised that the bars (both of them) are 8.5 kg rather than 20 kg. The only good thing is that the MDF wood discs that I thought did not weight anything are in fact 7 kg in total, so I have been logging 4 kg more. This obviously change all my previous results.
From today the weight is 100% correct and any previous PR is 4 kg less.
So this post is a new line in the sand.