Looking at buying a 99 gp1200 and a 2000 gp1200r. Wondering what there worth. The gpr won't come off idle for a little while after motor is hot and restarted ? could it be tors system. Owner is thinking carb problems. the 99 has 120hrs, the 2000 has 100 hrs. I have not seen them, but plan on checking compression and for air leaks. Thanks any help appreciated