Hey guys! I recently finished building bottlehead crack amp, and passed all the resistance check, but when I plug in the power, the fuse is blown, so then I check and fixed a few untrimmed wires and checked the wiring, no problem, replaced the 0.5A fast blown fuse and connect is to power, but the fuse was still blown. I did the test without the tube, still doesn't work. I can't figured out what the problem is, so I took some pictures and hope I can get some help here. Thank you so much!