Welcome to the group Wayne! Check out
ZR-7.com first, there's a ton of information on there about the bike. Also, look through the Maintenance and Performance Enhancements forums on this site, and you'll get an idea of the types of things that the rest of us have done to our bikes. The most common complaints about the bike are a little off-idle hesitation (although not everyone finds this), a lack of power compared to a sportbike and frequent valve adjustment intervals. There are a lot of good things about the bike, including great balance and handling, comfortable riding position, bulletproof engine, ease of maintenance and good looks.