If a suction cup does not work, try using a knife (be careful) to pop a tiny hole in the cap. Then pull the knife at an upward angle and hopefully the cap should come out with it.
IT IS POSSIBLE TO USE SUCTION CUPS, I literaly just did it 5 minutes ago,just push it down hard, and then if you have to(i did) use pliers to grab the top and pull
There is a section to ask questions; and that is all of them.
There is no problem with posting a question in a particular thread, just make sure it is relevant. This particular question should be in the general section.
For instance, if I have a question about how to do a certain part of And Whut, I would post that question in the tricks section.
Another example is say I want to buy a Born Crucial Cream from someone, I would post that question in the B/S/T thread.