Jquery ajax encoding data

I have this code (below)..

$.ajax
({
    type: "POST",
    url: "../WebServices/Feedback.svc/sendfeedback",
    dataType: 'json',
    async: false,
    data: '{"stars": "' + stars + '", "rating" : "' + rating + '", "note" : "' + encodeURIComponent(note) + '", "code" : "' + code + '", "permission" : "' + permission + '"}',
    contentType: "application/json; charset=utf-8"
});

I am using this to pass in data to a web service but the problem is if there are any characters in there like this (, / ? : @ & = + $ #). I have put in an encodeURIComponent which works fine and then in the web service I put them back again.

What i'm asking is if there is a better way of accomplishing this? It seems a bit crazy that I have to encode the string each time before passing it through..

Thanks