There's tons of info on the web.
The biggest issues are deferred maintenance, a through pre-buy will identify most issues. A good pre-buy will be 50 - 60 hours and should include a flight to identify rigging issues.
There are several significant AD's and corrosion is a problem in aircraft from numerous areas of the country.
After a deep dive into the logbooks you should plan on talking with previous maintenance personal about the aircraft.
A search on SOAPA into maintenance issues is helpful