Hey all. I am in need of replacing my bedroom slide seals and will be replacing the slide topper at the same time. I have the topper from Talin RV and need to purchase the slide seals. My wiper seems to not touch the top of the slide currently. I will be ordering guardian plates to install too. I know Steele Rubber is a good source for the seals. My questions: how daunting of a task is this? Is there anything special I need to measure or pay attention to? Are the wiper widths a one size f