I seem to recall issues were two fold
1. The high mounted tail engine on the dc10 gave pitch changes..... Mind you this was the savour of many at Sioux city when the centre fan let go and shredded the hydralics
2. I seem to recall there was an issue with one of the rear side freight doors loosing pressure and coming off.... But old memory is playing tricks and can't remember if it was dc10 or Tristar and there where a few crashes as a result
Just googled... It was dc10 with cargo door two crashes, then engine pylon problems and then slats issues... Amazed there have been 32 totall hull loses with over 1,200 people killed.