The Promax plates come set-up for your application ie you have to tell them your specs etc. Mine still needed a bit of fine tuning.

Both metering blocks have the idle fuel restriction above the float level. It should be moved lower which requires drilling, re-tapping and moving it to below the fuel level for more consistent A/F metering.

The black anodize finish is very durable. You really need an A/F gauge to be able to tune at this level.