[J-Ro]

This is the procedure I went through to narrow things down.

1. Drove the car (briefly) with no bar or endlinks. No noise = problem with the bar/endlinks.
2. Drove the car with the bar, non-Si adapter brackets and STOCK endlinks. No noise = problem with the endlinks/bolted connections.
3. Drove the car with smaller washers (to better fit modified LCA brackets). Noise = problem with endlinks themselves.

Each time the car was driven, I made 100% sure that all bolts were very securely tightened, so I could rule out rattling connections. I went through all of this so I could be sure it was the endlinks. I wouldn't waste your time with this unless I was absolutely sure.

If you want me to send the current set I have back to you so you can look them over, let me know.

Thanks for your help!
Jason