Sorry to hear about your plane. But yeah, wow, an 11 year old carb would definitely need a rebuild before one could expect it to work well. The regulator diaphragm needs to be very supple to work well. I have seen diaphragms from gas engines be too stiff to work properly after a year or less. It depends on the fuel used, etc., but it is a good item to check thoroughly any time you have problems with one of these gasser engines.

AV8TOR