Thanks Shane.
I just emailed the company to ask them what camera they shot on.
iMedia Converter just converts the MXF to whatever you want, (in this case *.mov)
I’m wondering if the 54.94 fps (or 60 fps) is the reason why the clips are playing in what seems like fast forward and stuttering. I currently have them placed in a sequence where the frame rate is 60fps. I will try to make the sequence 30 fps and see what happens.