St Anthonys, jetting questions

[300exHONDARIDER]

Going to SA in June, and have a stock 400ex. I have a new baffle for the exhaust (ebay), and its about a 2 inch opening. I also have a outerwears air box lid, which is almost like running with no lid. I was thinking because of the altitude richening the mixtures out, these two would lean it back out. Would stock jetting be good...currently have the 148 jet in the main, and 38 in pilot, or should it be richer?
Anyone run a stock 400ex, with stock baffle and lid, and what jetting changes did you make?

[QuadJunkies]

I will not be much help to you as myj etting is prol a bit dif than what yours will be...
Just wanted to say have a GREAT time at St. A's!
Im jealous!
I wont be able to go in June like we usually do :(