Is there any action I can take against a home inspector who I feel missed major problems

It depends on your contract with the inspector. Most limit their liability to the amount paid for the inspection, but it depends upon how the contract is worded. They normally truly are just an opinion of the inspector, not an insurance policy against defects...but read the contract as that should answer your question.   A lot of folks don't realize this when they have a home inspection done. Good luck,