Idler arm hits on header

See the pic.

'73 Dart, 318, Hooker cheapo headers, new motor mounts, new tranny mount. (all spool type mounts)

Idler arm hits real bad on the header. I've tried two different arms, and the one in the pic clears better than the other one I tried. Even jacking the engine up until the spool mount bolts are almost out of the mounts doesn't come close to clearing. Wondering if anyone else has had a similar issue, and what they've done to resolve? I don't have a problem doing some "dimpling" to the headers, but I'd have to bash that thing to about half it's original diameter to get it to clear - that bothers me a bit!

Thanks!!

idler_hit_header.jpg