http://www.dealextreme.com/details.dx/sku.15259
Then get some of these, I bought some to keep dust out of the headphone jack and they work very well and are cheap!
They should help keep the water sensors from turning and will keep the dust out. I'll post some pictures of these plugs on my phone if people want? I pulled the sharp pin off the headphone plug with pliers to stop damage to the jack and because I didn't require a sim removal tool.
Then get some of these, I bought some to keep dust out of the headphone jack and they work very well and are cheap!