Hello,

I own a 1976 31' Harstad Motor Sailor. It has two large sliding
windows in the main cabin which used to slide. However, one of the
previous owners siliconed these closed because the felt sliding rotted
away and the rubber splines became dry rotted. I would love to
rebuild these windows or have them rebuilt. The frame is a two-peice
extruded aluminum that slides apart to replace the plastic. My local
hardware store had spline, that looked similar, but would only accept
a thickness of 1/8", where my plastic is 1/4".

My question is does anyone know where I might acquire these supplies,
or a shop that can rebuild these?

Many thanks!