OK. let me be more clear.
Pl
ace an out of spec AC fuse in your gear, and you can kiss your insurance policy goodbye. To start.
Is that clear enough? I don't mind the idea of a smiley in this post, like so:

... but we're talking about something where things should be spelled out in a straightforward fashion. Some hold back, not wanting to appear as if they are contrary, or argumentative. Or mean.
In this case... it should be spelled out more directly and in stronger terms than I have used.
Earlier in this thread Gary went through the effort of illustrating that messing with the thermal parameters of specified and approved fuses, was... well...an issue.