Tuning a Proform/Holley carb, what parts and tools?

I have read any liquid filled FP guage is sensitive to high temps.
My cheapo Mr Gasket is only accurate at room temperature.

Most good liquid filled gauges have a vent on top that you can crack to equalize the internal pressure with ambient. If you do that before taking a reading, they're pretty accurate IMO. This is a good one- noticed the vent on top. Plus, Summit will price match the ebay prices of $32 with free shipping.

https://www.summitracing.com/parts/aei-15632