The honest limitation here: if a roller's been bad long enough to wear a groove into the track itself, swapping the roller alone won't fix the shudder - you're also looking at track replacement or realignment, and we'll tell you that up front rather than sell you a roller job that won't solve the noise.
With 20,696 households in Caldwell and most of that housing dating to the same early-2000s window, we also see a specific failure pattern: builder-grade plastic rollers from that era weren't rated for the swing between summer heat and the cold-severe winters this region gets, and they crack at the stem rather than wearing down gradually. That means a roller that looked fine on inspection last year can fail without warning this year. If you're hearing any new grinding, don't wait on it - a cracked roller that lets go mid-cycle can bind the door off its track.