Slow 3g speed on a flash evo 4g

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http://androidforums.com – I'm getting very slow 3g speed on my htc evo that is flashed to boost mobile. The latest speed test result I got was 138dl/181up 264dl/633up 189dl/722up. My radio is n my prl is 61009. Any thoughts, ideas i should try to do see if it my speed would increase? (General)