in cinema tools you can conform any clip to any (useful) frame rate.
open cinema tools and goto file->batch conform. select any clip from the folder where the clips are and choose the desired frame rate.
in this way you can conform your clips from 24 to 25 which may (or may not) solve your problem. if anything goes wrong you can reverse the process.
note: i think the command “batch conform” is new to cinema tools version 3. if you have an older version you may have to do this clip by clip.