If that's the problem your car is suffering from old age.
There's an elastic strap sewn to the underside of the soft top's material that pulls back on the top so that the cable is forced inwards when the top is being closed.
I can almost guarantee that the strap lost it's elasticity.
You can replace it yourself if you're handy.
First, look at it until you find the problem. Make sure it is the elastic band.
If it is, you can buy it by the foot at any arts and craft store.
If you're not good sewing you can use a stapler to staple the new strap in place.
If you use the stapler press the ends of the staple in with a pair of pliers so that they don't fray the fabric.
Sewing with a good quality nylon thread is the recommendation.
Make sure the other end is anchored correctly to the top's frame.
Happy Boxstering,
Pedro
Pedro Bonilla1998 Boxster 986 - 311,000+ miles:
[www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)
Racecar spelled backwards is Racecar
"Racing is life. Anything before or after is just waiting" ... Steve McQueen as Michael Delaney in "LeMans"
"If you wait, all that happens is that you get older"... Mario Andretti
"Being second is to be the first of the ones who lose" ... Ayrton Senna