* Add 1 Part 15254 Tan Arch 1 x 6 x 2 - Medium Thick Top without Reinforced Underside (Alternate) (match ID 2)
* Change 1 Part Tan 12939 Arch 1 x 6 x 2 - Thin Top without Reinforced Underside {match ID 0 to 2}
Comments from Submitter:
source: part-out of 4 sets