I have a ry30530 weedeater it startsan idles fine but when i try to give it gas it dies .I have taken the carb apart several times to make shore it is clean but no luck. thanks for your input;Matt

Your carb probably has 3 screws that can be adjusted. The one against the throttle shaft plate is the IDLE speed screw, probably Philips head. Turning it in opens the throttle settings, backing it out, does the opposite. No real concern here. But, the other 2 screws are: the L and H mixture screws. Typically, the heads of these 2 screws are of an unconventional design to prohibit tampering by the end-user (you). I use a small, plastic automotive wire connector tapped down onto the heads of these screws to get ahold of them to turn. Try it. In the case of your machine dying out upon acceleration, providing it is back together properly and adjusted correctly (see link included for tuning), you will need to try turning the L mixture screw counterclockwise about 1/8 to 1/4 of a turn, because at WOT (wide open throttle) the carb utilizes the fuel in the L (idle) circuit of the carb alongwith the fuel being provide by the H (High Speed) fuel circuit.
http://www.zamacarb.com/tipspage.html