Help with old turntable cartridge...how do these work?

We have an old Westinghouse Stereo cabinet – HM 1359 -
Recently we had to replace the stylus. Now, the arm skips across the record without enough pressure. We removed the cartridge to look, and I’m not sure what it’s actually supposed to look like, but I think in the replacement process, a spring might have been disturbed that held the cartridge in balance. I’ve been looking and see this kind of cartridge is difficult to find to replace…
Any ideas on this? I don’t really know what I’m looking for or if this is fixable.

Here is a link to a picture of the cartirdge – http://www.turntableneedles.com/Astatic-720_p_2341.html
and the stylus looks like this
http://www.turntableneedles.com/find5.a… lect=Model

The stylus is in the cartridge, but the cartridge is not sitting at the right angle -seems like it needs a spring. Does anyone know anything about these kinds of cartridges?