blower problems

Put my blower on and doesn't want to run under 2000 rpm it seems like there is no idle circuit working. Just using the carb until i get a pair of Stromberg's. Its a edelbrock 1405 carb ran good on a motor before but not sure why it won't idle, checked no vacuum leaks but i noticed the metering rods seem to get sucked down into the body. Doubled up the springs on the rods and it runs a bit but not very well and no slower than 1500 rpm. Any ideas in making my carb work.

Those needles are meant to be down most times.what vaccum reading?

It sounds like a classic vacuum leak symptom but admittedly I'm no expert on forced induction.

I have 12" at idle checked all gaskets, cleaned out the carb and its running, reset the fuel pressure to 4.5 and it runs but still has a lop like a power vale lope but the edelbrock doesn't have a power valve.