hope someone here will have an idea.
doing a spot of decorating (joy) and just changed a double lightswitch
old switch labeled Top L1, L3, L2 with a red wire in L1+2, and a black with a red collar in L3
Bottom L3,L2,L1 with red to L1 + L2
New Switch Top Common, L1, L2
bottom L2, L1...