Well, recently (okay, well, the last 7 years) my NES has been being wonky. It would lock every now and then, and the gray screen persisted when starting games. Well, I cracked it open today to see if I could clean it or something. Looking at a few repair documents on the internet said I should replace the 72-pin connector on the main board. What my question is, is has anyone here ever done this, and has it improved things?