Instead of rotating the shaft (not sure what that is, unless that is what the spring is on), how about putting a locking pliers on the tension cable next to the top cable wheel?
My tracks/rails are steel and I could barely bend them. Is it safe to replace vertical rail rivets with screws or will they come loose, I believe the newer rails are aluminum which are lighter and also easier to bend. My rails are steel.
I have an 35 year old Allister Type IIA garage door opener. I swapped out the rollers for new ones except the bottom 2 rollers. My tension cable is connected to the brackets and want to know how to change the rollers. I have tried removing the vertical rail but the vertical rail has 2 rivets...