Your pictures brought a question to mind.  I put new &quot;doughnuts&quot; or seat rubbers on my Oliver 770 a couple of years ago.   Both rubbers split after being on the tractor 14 months.  I put about 40 hours a year on that tractor.  It is also shed kept.  I bought them from a reputable web site.  I called them, and they said they were guaranteed only 12 months.

It seems that the &quot;new&quot; seat rubbers may have been sitting in some warehouse for years and were hard and brittle.   Is this a common problem?

RonnieS