The reeds shouldn't do that, mine runs smooth and clean off idle. Try the #8 slide, borrow one if you can. Start back up to 45-48 on the pilot and middle needle position. The 250s seem much eaiser to dial in with a #7 than a #6. The 300 being a bigger pump may be eaiser with the #8. If the slide is rich the rest is a PIA.
|