Billet Meter blocks for 850 DP... your thoughts?

I have a 850 DP that I am installing Quick Fuel billet/Adjustable metering blocks on . These come with blank bleeds for emulsion / PV and fuel restrictors.

My research indicates Drilling air bleeds to .028 to start with .

Anyone install these before with success ? Where did you start as a baseline ?
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.028 emulsion is a good start. Use them in 1 and 3 from the top and block 2 and 4.

Move the idle feed restriction down. You’ll probably have to tap the lower holes.

Depending on carb size and what your doing, the IFR can be from about .026-.034 and the IAB should be in the .068-.072 range to start.

I check the T slots and see how wide and long they are, but I haven’t found any yet that I wouldn’t use a T slot restricter on. I start at about .078 and tune from there.