Thanks for putting all of this together.
One trick I just discovered today when going over my hardtop for the first time: these plastic micro tips designed for CA glue bottles work great on the short straw on the HHS-K can. It's making a lot easier to not make a mess and be confident that I'm getting the grease exactly where it needs to go.
https://www.amazon.com/Micro-Tips-Pr.../dp/B086SSLKYH