Ok, ive been trad for nearly 20 years and use wfp also and can solve most problems regarding blading.
Make sure that your squeegee channel is not bent, even a very slight bend will render the squeegee useless.
I always use Pulex soft, in winter and summer. Cut the rubber with a new sharp scrapper blade and not scissors and cut just slightly longer than the channel.
I use squeegee-off with some car screen wash added to a ratio of 5 squeegee-off to 1 screen wash.
Add a couple of squirts to about 5 ltrs of water, just enough for a light foam.
Soap the glass and then squeegee making sure you overlap an inch and then detail as required. don't over wet the glass cos this will lead to more detailing. If you make up the soap as described then little detailing will be needed.
If you are getting fine lines left on the glass then check there are no hairs trapped in the blade or splinters of paint. If that fails then change the rubber.
If you have problems with all rubbers then I think you are cutting them with sissors which is a definate NO NO.
Hope this helps cottonbud10.
Regards
Asboss