Hi, new Transporter 6.1, not a California. Have an external windscreen cover, works well on front 3 windows. Not sure what thermal blinds for other windows to get. Vehicle carpet covers metal on other windows except tailgate. Was looking at Brandrup, would these fix on, not keen on sucker idea. Also, any advice re which pop top insulation cover is best? Ideas re how to reduce rivers of condensation? Previously had coachbuilt then adria campervan, no condensation issues like this and had not realised how bad it would be