[Phlogiston]

I think that those are correct. I don't think that I have ever used any but the "thick" chassis washer. You can probably get by without the front ones, but they are cheap and like said, they will be used sooner or later, a very common rubber part in Philcos.

More important, did you get the rubber spacers/ bumpers for the sub assembly. There are 2 thick(er) and one thin, but I think that the thick ones will work and that they are sold as a set. These are necessary and always need to be replaced.