If you subscribe to Jims Newsletter theres a workaround for intermittant 504 errors.
/SEC_CONFIG_A/1
/SEC_CONFIG_A1/2
/SEC_CONFIG_A2/3
/SEC_CONFIG_D/1
/SEC_CONFIG_D1/2
/SEC_run_COMM]s/
/SAFE_2/
/DoD_route_1-9/
/DoD_route_10-19/
/DoD_route_20-29/
/DoD_route_9999999/
/DoD_pack_1-99/
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