I'm heading over to St Anthonies end of July, and need to know if I should re-jet before hand. Any Idaho riders have suggestions on where to start?

My Stock jetting was 150 or 155 if I remember right. Mods since then are W/B e-series exhaust 8 disks, carb clamp on K&N, carb mod'd slide/spring, needle up a notch and 165 main. Runs sweet and pulls strong at sea level to 3000 foot or so. Thats the highest she's been....

St Anthonies is up at 4900-5500 feet though?

I can easily put the stock main back in, or should I even go leaner?

Thanks for any suggestions.

First time to St A's, I'm ready for some BIG DUNES!