I'd drill the hole a bit deeper then install the insert. I have cut a coil or two off the inserts with side cutters before installing a few times when the hole could not be deepened.
Bluebird, thanks for the input. Yeah, I am thinking I'll give the insert a try. If that doesn't work then I guess I'll need to replace the manifold. I would think that I would have enough room depth wise to drill the hole deep enough to accommodate the insert. Good times........
