Thanks guys...ref lubing the posts. Not a bad idea...I did not do that when I initially replaced the spring. But I should note that the spring did not fail at one of the curved ends...instead the body of the spring broke in the last coil...where it made contact with the loose end. And they charge $75 to haul the mower each way...about 15 miles...so I'm not going to have that done to inspect a post!! And I agree with the "good dealer" comment...but I think that both of the guys behind the counter are employees only. Don't have any idea who the owner is.
Thanks again for your input.
Bob