Hi Rodrigo, It isn't hard, just time consuming. You will need to install damper spoons on the wippens, Extend the damper lift rod, Get matching damper levers, Get new damper blocks or blocks/dowels Get some treble upright damper felts Get some time. Install damper levers install damper blocks install damper #88 and cut the wire lower the block and adjust the timing and spoon. adjust horizontal and vertical alignment to match the strings Install remainder to a sloping line to match #88. Done DO you really want to do this? Newton
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