Hi again Matt,
I'm no expert either but unless I'm mistaken we have it right. The hot end is the forward end of the fuse which as you say goes straight in to the power supply. The SR is on the other end which is the fuse holder itself with the fuse values showing left to right as we read. Also, I think the power supply rush when turning on the unit first before the power supply eliminates the current rush because the rectifier tubes warm up slower. Again, someone else is the forum like HeavyMech knows way more on this stuff.
Happy listening
Greg