So .. here we go . We have a c class 4 winds Thor rv and we want to replace the metal Venetian blinds with pleated blinds that have translucent at the bottom and blackout at the top. We have been looking on line but the measuring and mounting instructions look confusing and we are worried we would mess it up. Does anyone know where we can get them in the UK? Or if there are any trade shows coming up we could visit and have the professionals measure?