Go on do it now !!!! go check your ZIPPERS on your board and kite bag . I just found 3 sized zippers on mine . Yes I know should have sparyed some silicone on them at the end of summer but was just dreaming that the season wasn't going to end . Would be horrible to get to the beach wind kicken ass and you cant get your kite out because of a sized zipper and have to destroy your bag to get in .
Another tip, if it has seized don't force it open. Grab a pen and push the tip between the teeth of the zipper and you can then open it. The pour warm water into the zip later to free it up.