Dealer buying my car - NSW Question - Private sale

Hi There,

Sold my car to a dealer, they completed an inspection, passed inspection, agreed on price and payment processed etc

Signed contract and just revisited and noted there are terms around vehicle condition and if they feel was not as described i could be breach?

Ive also completed an inspection visually and can't note any issues, a couple of dings here and there but overall good condition.

Question if full payment received is there any recourse for dealer (again the had it inspected), I have also read due to nature of sale in NSW (Private) that once sale completed no recourse but again just reading these stipulations and worried.

Anyone seen a case where issues from a dealer once payment received and collected after the fact?

Thanks