new top
 

have a new top glass window. yeah yeah.
when should i start to treat it with fabric guard
tks

Now.;)

Blue Magic makes some good convertible top protectorant

should i put it on a new top

If you bought it without protective coating, then YES, do it now.

does it come with the foam moulding near the clamshell? I have to replace that one...

p.s.
I use Raggtopp protectant and cleanser from autogeek.net
But all these protectants in general have to be re-applied each time you wash the top with the canvas cleaner.
Don't use regular car wash soap, those detergents ruin the canvas over time and give you those weird wear marks.