(sorry–I didn’t see mike’s reply above before replying–and mike found a much better deal on the springs than I did!)
I encountered this problem earlier in the fall, when we got the first blast of cold weather. thanks to the ideal gas law, we know that the pressure of a fixed volume of gas decreases with temperature.
the gas springs that CLC provides with the TD kit have 20lb of force. I had an email exchange with Dillon at CLC who said their testing on the prototype determined that 2 20lb springs were sufficient.
I bought 2 30lb springs, and started by replacing one of the 20’s with a 30. that provided sufficient opening force in my situation, so I didn’t replace the other one.
I would recommend you try the same thing. IIRC, I bought it from amazon for a reasonable price. they are made by Attwood, and the model number you want is SL34-30-5.
the trick to removing the spring is to find the small plastic c-clip at each end of the arm. they are about 3/8″ wide. use a screwdriver to gently pry the clip outward while pulling the spring gently away from its mounting pin. when you have the clip pried out enough the spring will disconnect.
ken
