Ted,
I totally agree with this approach and that is what I do most every time. I have the seller send my purchases to JJ Perodeau for inspection and JJ gives the OK (or not).
He found stuff that nobody knew anything about, and some times stuff that the seller should certainly have known about.
No dealer has refused yet to send guns to him for inspection.
If they did I would run away.
If JJ does find something, then I have a lot more leverage than if it's just me saying it. It does help me get a discount if I still want it.
By the way, I do send a letter with each check and specifies my conditions. If the seller cashes the check, he implicitly agrees to my conditions.
I stand behind my first post.
If any problem arises after the 3 day period, then the buyer is on his own, unless he can prove the seller knew about undisclosed issues.
If the seller helps, then kudos to him.
Best regards,
WC-