Using a steel ruler is hardly a bodge, its a marked improvement on the original springs. Its more impact resistant, has just as much natural spring and you can fine tune the length of the spring.
It's fair enough if you consider it unworthy of your bike, i wouldn't say my bikes were cheap either, but you've spent money on an inferior product and ignored the advice of several more experienced and knowledgeable riders, just seems a little naive when you've posted a topic asking for advice on the subject.