Hi guys- My GF has a tw200 and I need to rejet her carb for between 9000-12,500 feet. She's on a modified ride upon which the previous owner slapped a faster flowing muffler and a straighter pipe, and lashed the valves for better airflow (all according to her via the previous owner). A few holes have been drilled into the airbox. I know this isnt much to go on, but a general ballpark for jetting and needle settings at that altitude would be fantastic. Cheers, fellas!