Re: QD-10 that runs horrible. Expert advice needed. Home › Forum › Ask A Member › QD-10 that runs horrible. Expert advice needed. › Re: QD-10 that runs horrible. Expert advice needed. bob-dUS Member - 1 Year (includes $3 online payment fee)Replies: 514Topics: 104 July 27, 2018 at 9:27 pm #80231 Huntleybill I have the same motor, and carb tuning is a pain. Cant get midrange to smooth out. Look up my posts from last week. This won’t help your problem but I think the recommended oil ratio for this model is 16:1. Bob D