Last summer I had to have the compressor on my Trane XE1200 replaced. After the replacement the unit ran louder than before....you could barely hear it running before. Now there is more compressor noise. I was told that those compressors had a rubber bushing that went on both sides of the cleat where the compressor bolts to the unit. How valid is this statement? They did replace the blanket over the compressor. This buzz or humm is annoying