Reading the regs, I don't see an obligation for an IA to document the inspection activity unless they are approving or disapproving the aircraft for return to service. If any maintenance was performed at the same time the airplane was opened up for inspection however, that would need to be documented. So, what are you asking the IA to do? Perform an inspection with the same scope and detail as an annual inspection or are you asking them to inspect and certify it as airworthy and return it to service? As I mentioned before in this thread, an annual inspection may not have turned up the items the OP complained about if they were in passable (but not good) condition. The IA is only certifying that the airplane in question is in an airworthy configuration and condition at a moment in time but it may cease to be airworthy shortly after that point. This is why I don't think an annual inspection is an adequate pre purchase inspection. Many things may be worn to their limits but still airworthy and it can be signed off as such. What a prospective buyer really seems to want to know is the overall condition and what is going to need to be addressed in the not too distant future, and that really isn't the purpose of an annual inspection in my opinion.