The reason I use the LM P3Dv4 C130 gauges (located in the P3Dv4\gauges folder), is because the Captain Sim C-130 gauges don't work in P3Dv4, and the CS_EX1_KC130 (KC-130), and CS_EX2_AC130 (AC-130) have extra gauges. The KC-130 has the extra gauge for the fuel boom operation, and the AC-130 has the extra gauges for the weopons (although I can't get the weapons to work, as the weapon panel master switch doesn't turn on in the CS_EX2_AC130, or the AC-130).