Less favorable options would to be to modify the "class" of armor or the material itself. This is not as recommended as it will change EVERYTHING that uses these tags. (I.E. If you change the class of heavy armor to weigh less, ALL heavy armor will weigh less.)

Sorry for the delay. When trying to modify the original mod's values, I recommend modifying my mod over the original. I say this as then the changes are easier to revert if they are not correct. The weight of an object is not only changed by the value in the "weight" value, but also the material it is made of as well as its "class" of armor. This armor is a heavy armor made of plate, the heaviest, and as such will be very heavy. When modifying the value, try setting the "weight" to 0 and see what the weight becomes. If it lowers the overall weight of the armor just keep setting it lower until you get the value you are looking for. If it doesn't keep lowering, you may have hit the minimum allowed weight for the object.

Okok. So apparently the material section is very important has it gives many atributes, weight being one of them.

Thank you. BTW, if I want to change the weight of the parts where I can do it? In the oroginal mod?. I tried changing the masked helmet from 6kg to 2.5kg but doesn't change ingame. It did work with weather protection. Its so confusing

Thank you, was using the other version, now I am switching to yours