Lemon souffle is thin because there is no fruit juice. When slightlly thicker, leave it to rest and when it cools it should start to set. If it does not, it means the gelatine is probably ineffective. Try a fresh packet or increase the gelatine to 1 1/2 tbsp.

http://niruskitchen.com/recipes/details.asp?recipe_id=293&category_id=38

The one in which 1 cup = 240g

they are already on site, please browse with the search engine.

Yes kababs are best made in a convection mode if you are not using a grill. About 5 minutes with turning should be enough.