In article ,
"Brian Gaff" wrote:

I'm sure one of the messages did in fact suggest checking all connections
for looseness and corrosion.....

You're probably right Brian, but I didn't save it, if there was such a
one. The connections *seemed* tight, and I'd cleaned and greased them
before winter, so no corrosion.

Another moral to this story: when barking up a particular tree, don't
forget all the other trees :-

J.