I replaced the garage door extension spring with the same (I thought) strength springs now the opener struggles a little. The existing springs were "orange" so they were probably (maybe) 170# springs. I could only find brown 160# replacements so I used them. Would 20# total difference cause the opener to struggle?
OR.... The old springs were double..one INSIDE the other...not next to each other. The springs were quite old and I'm guessing, again, that they needed 2 spring to get that much strength. Looking at the pattern of the orange paint they used it looks like they were painted AFTER one was inserted in the other. Based on this I'm _guessing_ that the two spring together make one 170# spring. Or am I wrong on this and the old springs were actual two
170# springs!?thanks