hi, i want to do a small mod to my chair, gonna lower the arms a bit, to do this im going to un bolt the arms from the underside of the chair, place a block of mdf, and use longer bolts, so i ordered some 80mm m6 bolts, but the thread pitch is different, im not an engineer and dont know what to order next, here is a pic of em side by side, the one on the right is the thread i need, the one on the left is m6x1.0.
