A contractor mistakenly installed 0/12-6/12 woodstove chimney flashing on my roof that is an 8/12 pitch. I'm in middle of installing a cedar shake roof and the flashing is already in place and the shakes have already been installed, so I'm not keen on removing the flashing now and dealing with uninstalling and reinstalling shakes. Am I safe to modify the flashing he installed by trimming the top to re-center the opening for the chimney pipe? I assume all my clearances would still be fine (6-inch pipe). Thanks for any help you can provide.
