Being 'easy on the brakes' might be the cause of the glazing and the squealing. On our school bus fleet, the repeated application of the brakes lightly caused glazing. Taking an empty bus out on an empty road and a couple of 'hard stops' would often quiet them right down. If you're pulling the rotors to have them turned, might as well have the calipers checked for free movement of the pistons too. A change of brake fluid is also a good idea.
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI