I'm considering having Gregg Loewen calibrate my Tosh 40H80 RPTV. I would be getting the basic calibration package and possibly the Duvetyne lining as well. There is an extra charge to have it lined with Duvetyne. Is it worth it? Does it make much difference? I'm looking to get the biggest bang for the buck, hence the reason I ask. I would appreciate hearing about experiences and suggestions. Thanks!