Evo Intake Manifold Leak?

Howdy, and help yourself to an ice cold Oly.

I have an '89 Softail with 116K miles. Starting to experience some
rough running that varies depending on temperature. Sprayed some
WD-40 into the intake manifold area and idle increased. Sounds like
an intake manifold leak, yes?

uhh?
spray the wd-40 on the outside not the inside.
Finding an air leak at the manifold is simple. All you need
is a can of penetrating oil (like WD-40) with the extended
nozzle attached. With the engine idling, direct a heavy
spray of the penetrating oil at the manifold gasket area
and base of the carburetor. When the spray hits the area
leaking, there will be a distinct change in the sound of the
engine. If the air leak is major, the change in sound will
be quite obvious. Smaller leaks may only create minor
changes in the sound.

I would like to fix it myself this time. From searching here it
sounds like quality of H-D parts in this area is dubious. Any other
tips, tricks, or gotchas?

After doing the check 'Key gave to make sure it is a manifold leak here are
some tips passed to me when I did this on my 95 Superglide.
When you take carb off make a stand of some kind (I made mine from a thin
strip of wood) that will just fit under the manifold opening where carb
mounts. This will let you reinstall manifold so the opening will be the
correct heighth and will line up with carb on reinstall.
When tightening flange bolts in heads, tighten a small amount then move to
opposite flange bolt so you pull flange down to head straight and don't
distort or damage gaskets. Also check position of manifold frequently to
make sure it stays centered between heads when tightening flange bolts,
reposition if necessary.
Dave

You'll need an H-D manifold wrench. Available at any indy shop. It's a
allen tool with just the right curve to it and has a swivel ball deal
on one end. Get one. It makes it *way* easier.

Use "James Gaskets." The allow you to keep your metal flanges instead
of the plastic ones that the dealer will sell you.