Ok, I know how to do it generally, and it isn't really
very complicated. But, Does any body have any tips on
getting the new one down over the fluted end on the roof
jack? That is the place where I always have trouble.
It is almost like trying to get a 12 inch vent down onto
a 12 1/4 inch jack. I know it is just supposed to slip
down onto it, but I always have trouble with that kind
of slip joint.

Thanks,
Bill Gill