I totally agree. But the problem is that while it never ran particularly “cool” before, it also never stalled out on me before. So while making sure fuel is cooler via insulation and spacer is beneficial, getting high performance coolant will reduce engine temps and also beneficial, these things were never affected before. To me, something either happened, ie a new alternator made some kind of unforeseen change to the dynamics causing stumble and stall, or something is not working as it used to, ie a fuel pump going south not providing fuel at random moments. I understand that it can be a combination of things- heat can certainly be a contributing factor- but I don’t like coincidence. Everything was good, not perfect but good, a change was made, things are not good.