serious carb issues

well i took the carb apart today, blew air through all the passages and put it back together. Set the 4 corner idle screws each at 1.5 turns out and fired the car up...started right up!!! and adjusted from there! the car is running strong now, and doesnt stumble off the revs either, but i do have a slight vacuum leak however, and the lower the rpm at idle the worse it gets. It seems to be coming from the throttle shafts as they did have some play to them when i had the carb apart, and when the car is running if i push up on them to snug them the whistling goes away...whats the fix for this? new baseplate?

This carb was just rebuilt & it has sloppy shafts WTF, When i was rebuilding holleys i always re-did the shafts with new bushings, with those loose shafts, you'll never get that carb tuned in "right", you may get by, but it won't be right, plus it'll always stay out of adj., At this point, i would just get a Billet base & be done, there set up for 4 corner, there nice, & it won't have holes drilled in the blades.

Heres one. http://cgi.ebay.com/ebaymotors/HOLL...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories