In our 72 with 1600 we run 30lbs fron and 40 lbs rear.
Our 73 poptop with 1800 is same except when touring and loaded where rears go to 44lbs.
Link to varied tyre pressures and info here
http://thekombikonnection.myfreeforum.org/about55.html" onclick="window.open(this.href);return false;