Sorry to hear about the cold starting issue with your Wife's Max.
I used to own a 1998 SE (5-spd) and never had any cold starting issues or any other engine problems with it.
Unfortunately, I sold it (Nov 2003) so that I could use the $$$$ to help pay for my 2003 350Z. It had 101,000+ miles (75% highway miles) when it was sold and it still ran like new.
I kind of regret selling it, but oh well. At least its in good hands with family.
Maybe I'll buy it back sometime. After I finish paying off my Z.
Best of luck to ya.