Joined Club Bennington today and thought I'd ask for some help. I am sure the topic has been covered just not sure how to find it. Throttle on my new 250 V Max backs iff when over 2,000RPM. When pulling tubers, etc I have to hold the throttle. I know where the screw is that is supposed to tighten the throttle and have done so. But, it loosens again very quickly. I have a call into Yamaha technician but thought I'd ask if any of you have had same situation and know the solution. Thanks