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Hi ea69, I am building a set of these ready for when my MMU2S arrives, all is going well but the 12mm bolt and two nuts only weighs 61grms will this be enough? if I add another nut it is still only 79grams which will mean I will need to buy some longer bolts to accommodate the extra nut which is likely to push it up to around 100gms. What are your thoughts, the nuts and bolts are nickel-plated steel.