[irontwig]

#2 with limit
B F2 R' U L U' D R' U R D' R' L2 B D2 R D B2 D2 L' D R' D' L D2 L' R (27)

B F2 R2 U.L' B [2x2x2+EO]
D2 R D B2 D' R'*D L' R [Leaving six corners]

Checked a few places for a six move cancel (three move conjugates and moves sandwiched between two opposite moves) with the help of premoves even though I couldn't cancel six moves the insertion at the dot gave some nice insertions:

.=U' R U L U' R' U:L'
*=R D' L' D R' D' L D
:=U' R D R' U R D' R'