And one last thing, currently the modpack is running Forge 1230 and Buildcraft 6.3.6 w/o any chunkloader apart from the quarry itself and I have found that my quarry will get stuck in a loop where it tries to mines ghost blocks (shown here https://www.youtube.com/watch?v=CLPvHMKqNZU). I have personally upgraded my client and server to Forge 1291 (Latest 1.7.10 Recommended) and Buildcraft 6.4.3 and so far there isn't any issue with the other mods and the quarry bug seems to be gone.
On behalf of @Kinkyboo - moved to seperate issue