i checked the latest version of the rom and i don't my level (1C) ever got inserted. that also seems to be the case for levels 110, 11F, 121, 12D, and 134.
on an unrelated note, i know this hack is supposed to be on the hard side, but level 105 maybe is a bit too difficult for a first level. for example, this is a blind jump and i died the first time i got there, one-tile jumps probably shouldn't be in a first level, and this area is pretty easy to get stuck in if you accidentally burn the shell. i think in general the level would benefit from being more focused.
on an unrelated note, i know this hack is supposed to be on the hard side, but level 105 maybe is a bit too difficult for a first level. for example, this is a blind jump and i died the first time i got there, one-tile jumps probably shouldn't be in a first level, and this area is pretty easy to get stuck in if you accidentally burn the shell. i think in general the level would benefit from being more focused.