Yes, I live at about 200' and ride between 500' and 2000'. Mostly ride out in Pozo where it sometimes gets into the high 90's. So you suggest doing the modifications first and seeing how the bike runs there after........ Since i wasn't the one who changed the carb, would anyone know where i can get aftermarket jets for the sudco carbs. I visited their website and it provides part numbers but no way of ordering anything. I'd like to the get the manual with the exploded pictures and descriptions as well. Any other information would be appreciated. Thanx guyz.