What would you suggest the best thing to do for a periformis problem is?
Could it also be the cause of adductor problems as well?
Join the club. Look at articles from http://www.ishop.co.uk/site-map/pi/piriformis_syndrome/index.shtml
best of which is probably http://www.drpribut.com/sports/piriformis.html
What have you done about it so far? How was it diagnosed? Adductor problems are associated with it, usually the result of them rather than cause.