The hunt for more vacuum

Working the problem of border line vacuum for the dual diaphragm booster. My cam shaft is a 110 LSA Bullett, [email protected], 576 lift w/ 1.6 ratio. and at idle I'm pulling just a tick over 17" with the car in park and no load on the engine. As soon as I drop it in gear the vacuum drops to 15.7". So following kern dogs plight with hydro boost I thought I'd try a less technical approach. What I've done is relocated the vacuum port from under the throttle blades and moved it 3/4 of the way down #7 runner like the OEM locations. Then I added a vacuum reservoir to see if I could find a better brake feel. So far it seems to work however I haven't taken the car out for a real-world test but this is showing promise and only kicked the crap outta 50 bucks. Anyone tried this before?