I guess I was wondering why you were running in 4th instead of 5th...I run an 18T sprocket as well, and love it on the highway, but I always run in top gear and can still cruise up to 150-170 (90-100) easily if I want, although I usually cruise at 120-130...

'02 Blk/Slvr BA, Jireh fishtails, Freak, no AI, 160/42, 18T She is the Beauty, I am the Beast.