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Thanks for writing in. Don't worry, I'm confident your windows are all right! You might even have the correct spiral balances, they may just need to be charged a little. See our 75-006 Charging Tool. Use this to give the spiral rod 2-3 turns, then see if the balances better support the window. If this doesn't work, give it another 2 turns or so, but no more. If that doesn't work, let us see your original spiral balances and we'll see if you needed something else. Many thanks.