i have an older hatch model with fin-like wing nuts for securing the hatch in an open position. inside the assembly some acorn shaped washers that the male hatch-lift passes through. two of these have broken and my hatch will no longer stay open. does anyone know where i might obtain some of these washers or have an alternative solution? also, i am looking for the tuning specifications for my sail-rig assembly. would appreciate any info available here as well. thanks! n.kelly