Saturday I'm going to have a go at repairing an old rust repair to the side gutters on my roof. I've found a patch of fibreglass and sure enough on the edge is a rust bubble so I'm taking out the lot and welding in some plates. Has anyone done this with any advice? Depending on how low into the gutter I need to go- I'm deciding if I need to take the rail right off and weld it onto fresh metal. Otherwise do I just try to cut above it, though if I do that is it difficult to weld toward the bottom of the gutter? If anyone has any photos or knows a post I'd love to have a look. Sadly I couldn't find any in paint and panel. I have found this though so may be a similar job?

http://www.chevytalk.org/fusionbb/sh...hp?tid/233385/

Any advice would be greatly appreciated. Thanks