cite - bibtex citations minor bug in width of bibentry, space after citemark

[devangel77b]

1. There seems to be a long space after the citemark that I don't know why it's there in citation.
2. Also the citation bibentries in the sidenote are very slightly wider than the ones that tufte-handout generates?

Low priority if it doesn't interfere with other stuff. Possibly wontfix.

[devangel77b]

The relevant code would be in tuftex-cite and tuftex-sidenotes.
The space after the sidenotemark is probably buried in sidenotes or marginnote.
The bibentry width thing could be fixed by putting the bibentries in a box with the correct width before sticking them in the sidenote?