I have found everything I need in Ms. Valley's house and aware of the glitch with the seminar note. However, I cannot get the "skip puzzle" lever to come up. I got it to come up once, but not knowing I was going to use it, pressed ESC and then saved the game. I have gone back 2 save games and I still cannot get it to come up. Does anyone have a solution to get the lever to come up or have a save game they can provide? Thanks in advance.