I have a dual quad tunnel ram on my 289. I need some help or at least advice on how to go about tuning this thing. I consider myself to be quite experienced with carbs themselves but this is my 1st dual quat and it's throwing me for a loop. Here's my engine specs:

'66 289 bored .030 all stock lower end and approx 9.8:1 compression
'66 54cc 289 heads fully ported and Chevy valved (1.94/1.60)
Cam specs: 224/234 Duration @.050 with .496/.520 lift 107 int centerline and 112 lobe sep.
Crane full roller rockers and Edelbrock Rpm Valvetrain
2 holley 450 manual secondary carbs (4160 series)
Headers and full 2.5 Exh
Holley 'red' elec fuel pump

I can't seem to be able to make any ground in tuning it. Can anyone tell me how I go about doing this and with what tools? Any suggestions as to what the timing SHOULD be? I think my timing, last time i played with it, was well above 20 degrees initial and it really liked the advance.