Accord trunklid springs
 

I have a 2000' Accord with an aftermarket trunklid spoiler. The
spoiler weighs less than the factory one, but still won't always allow
the trunk to pop open. Is there a way ,short of replacing the springs
with stiffer ones, of increasing the tension of the existing springs?
I've moved the springs to the higher tension position and didn't
notice much of a difference.