My bud got his 97 xr600r 650 kit installed with cam (dont know cam stage) from I believe thumper racing. Bike seems to stall easily . and if stopping to chat or what ever , the engine will stalls after about 10 -20 seconds. Idles really good and smooth too. Then coughs once and stops. Anyone else have same problem ? I loaned him my stock carb which worked fine when I took off my bike , because I have a QS now , but still stalls on his bike . BTW He changed pulse generator and no difference.