Murat said:Well I can answer "sling" as soon as you let me know what it means...
Sling is product flying away from the pad when starting the rotary up. Unless your pressing really hard down on the paint, I just can't see how your not getting any product to "sling" (or maybe "spray" is a better word) when using such a high RPM. are you starting at lower speeds, then moving up to 4000? Or immediatly @ 4000?