I have Alenco windows. Bubble seals don't seal well in the corners. Kerf is approx 3/16ths inch. Bubble seal is 1/2 inch including the kerf. I am unable to reinstall the kerf into the groove. Would like to order new Bubble seal(s) and please give me a tip for reinserting the kerf into the groove. The kerf if round not winged as some of the seals you show.
Joseph