Sony Wega Optical block

I need the blue element or the RGB element block for a Sony 1080P Grand Wega television. The blue element in mine has the dreaded blue BLOB. Sony has decided that they will no longer warranty a known defect in this series of TV. I do not need the entire optics block, just the blue element or the RGB cube from a damaged block. This is from a KDF-42WE655, but any
1080P cube will work. The part number is 1-788-154-11. This is a project, not my main television, so I don't want to spend a ton on it