check point 12 in MM&M

[zipwin]

I have the green key and have gotten (many times) up above into the ceiling above rooms 15940-15943 where it looks like I should be able to go up to the tricky savings area and on to the last part of the maze but I keep sliding down a pole in 15940. What am I missing and how do I proceed?You have been very helpful and I promise this is the last question I will ask.