I am racing a STC series MX race this weekend near Houston on my 00' 426 and the high temperature is supposed to be 39 degrees. (We have been lucky during the first 6 races of the series and the average temp has been in the mid 60's). My carb settings are 100% stock and the bike runs great (but I haven't ridden it much below 50 degrees). Will the stock carb settings be too lean in the cold temperature? Can I make any minor adjustments (i.e., no jetting changes) that will get me through the weekend? Thanks in advance.