headers and k-member vibration

[Craig 94 TA GT]

I've been reading up quite a bit on cz28.com regarding how many people installed headers, didn't replace the motor mounts, and ended up having vibrations at idle and low speeds...the header was vibrating against the k-member. This seems to be common for long tubes. But I'm experiencing the same thing with my SLPs..which are a bit longer than real shorties, but not even close to long tubes. It looks like theres a gap between the header and k-member (about 1"), but it still vibrates, when the tranny is in "Drive". In neutral it's fine. Is there any other way around this, besides replacing the motor mounts, or grinding down the k-member?
If I need to replace the mounts, how hard would it be without removal of the headers. Thanks in advance.

[lt14mla]

could it just be vibaration from the trans mount?What kind do u have? I know my poly one gives crazy vibrations, and my open cutout didnt help either. idk tho

[Craig 94 TA GT]

I'm 100% sure it's not the tranny mount. It's the header because it's a violent rattle that happened as soon as I installed them. I'm putting up with it, but just getting ideas on what to do.
I noticed the poly tranny mount does cause more vibrations but it happens on freeway speeds for me. Plus, removing the plate that ES gives helped dampen the vibration quite a bit.

[Craig 94 TA GT]

OK, I'm an idiot. I was caught up in believing it was the driver's side header, but it turned out to be the passenger's side header flange. It was resting right on it, causing the vibration. I moved and re-installed it, but haven't tested it yet. I'm 99.9% sure that was the cause.

[Z Ya Later]

OK, I'm an idiot. I was caught up in believing it was the driver's side header, but it turned out to be the passenger's side header flange. It was resting right on it, causing the vibration. I moved and re-installed it, but haven't tested it yet. I'm 99.9% sure that was the cause.

Oh way to go there genius! lol j/k

Guess we'll have to test it out in about an hour, won't we?