A contingencies question

[Andrew Smith]

So say I waive all contingencies on my offer EXCEPT home inspection, but then I have an issue with something I waived, for example:

I waive the radon contingency, I do the radon inspection anyway and it comes out that there is radon to be mitigated. Can I use that as a bargaining chip on my inspection contingency by telling the seller: "Look, I will be ok with x that needs to be replaced based on the inspection but because of the radon mitigation I want $x amount off the property" or would that be illegal/breach of contract because I technically waived that particular contingency? Because my understanding is I have an out regardless, which is based on my satisfaction of the inspection results.