There is no doubt that this title is an absolute bitch of a machine to work on. The Aux Driver board is poorly designed and the diverter coils / drop target can cause all sorts of headaches. EVERY single machine I've ever worked on has required the cannon wiring looms to be replaced. Theres a lot of work involved in getting this machine up to our standards.
Having said that, I've played ONE "perfectly working" ST TNG, and I was very impressed with the machine up to the point where I have almost changed my mind on its gameplay.
Stay tuned