I think 40-50 might be to aggressive, you can always try in an inconspicuous area to test...
I would start with 80...
Do you have a pressure washer? you may be able to get under it and blast some of the paint off....
__________________
Don't feed the trolls. Don't quote the trolls 
http://www.southshoreperformanceny.com
'69 911 GT-5
'75 914 GT-3
and others
|