Listees,

Radiator wisdom:

85 van running a bit hotter all the time

Radiator not clogged with bugs/leaves/etc.

Flush?

No.  Only works about half the time on a regular vehicle and the long
coolant runs in the van make it less effective

Clean out Radiator?

No.  Plastic tanks.  Most shops won't guarantee a rebuild and even if they
do they want you to buy a new radiator because they don't know the condition
of the core

New core?

No.  See answer above

New radiator?

Any of those new German radiators around?

And the rubber mounts are toast as well.

Mike

The above information is the consensus of what I got from the replies to my
running hot inquiry.  I don't guarantee anything except it's going to cost
me money.