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