Seal for Small Window
 

Just wondering if any of you ever had to replace their seal that runs on top of the small window? If so, is it easy to do it yourself? I have already placed my order, it is comming from Japan and is going to take like 3-4 weeks. Anyway just wondering..., here is the seal I am talking about, I high-lighted it in yellow. The seal that I have on my SVX, there is rust built up underneath and it is bubbling up throgh the rubber. Thanks in advance for what ever advice you can give me.