I don't have MFN compilation right now here with me but I remember the first "yeah" on Telegraph road being removed (yeah, A long time ago...) and the shout in the audience (I love you DS!) and those bongos added.
About the new mix on Twisting by the pool there are some of the drums changed and at least four notes added in the middle of the song.
Compare the two versions:
old version:
new version:
In the remastered version they removed some hits of the snare drum. For example in 00:16 and 00:22
and they added four notes in 2:06-2:07
Compare them with the original.
The new mix is horrible, too much reverb all the song.
About Joop I think he had tambourine (played in Romeo and Juliet, Expresso love, Sultans, Telegraph road, Going home ,etc), some kind of maracass or shaker (played in Once upon a time, Private Inv) and cymbals (don't know where).