I am installing a FMF Mega Max on my 250EX. I want to take off the air box lid, but I don't have a big enough jet. All it is, is the 112. I have the stock pilot jet which is a 38 also I have a 40 and 42. I am going to put in 2, 1 inch holes in the lid with the 108 main jet and 42 pilot jet. Will that be a good chance?

 

So I put the 2, 1inch holes in and am waiting on the exhaust to get here.