hahaha. yes. much easier than filing them down. if they are crimped instead of tied on, a brick splitter and hammer is the best way i know to do it. getting the maths right the first time will save extra work and grief. send me a pm if you want a second opinion on your numbers before you start dissecting. would suggest not going under 4.5kg or you may find you are not getting full spread on the net. this will depend on the quality and line diameter of the net. generally lower diameter lines like lines 1 & 2 will spread beautifully but don't do snags too good. the opposite applies for lines 3 and 4. you may also need to look for another casting style? the vietnamese do all of their rigging up with the lead on the deck and only take the weight of the net just before casting. my favourite net is line 3 body and line 4 for the last 2 feet to the lead line which keeps the damage down in the most damage prone part of the net. this is spread by 6kg of lead which i can merrily cast at least a few hundred times in a day - and i am a fat, unfit, old fart...