* Delete 2 Part 47457 Red Slope, Curved 2 x 2 x 2/3 with Two Studs and Curved Sides
* Add 2 Part 41855 Red Slope, Curved 2 x 2 x 2/3 with Two Studs and Curved Sides, Lip End
* Delete 2 Part 47457 Red Slope, Curved 2 x 2 x 2/3 with Two Studs and Curved Sides
* Add 2 Part 41855 Red Slope, Curved 2 x 2 x 2/3 with Two Studs and Curved Sides, Lip End
Did you find them in a sealed set or using instructions as source?