In DCS, the shilkas do not turn on their radars until you are near weapons range. By the time the sidearm can look at them, the shilkas are already firing at you.
The MK-20 bug involves those in ITERS. If you use one bomb per pylon, they will work as intended.
The bug has been squashed and is ready for the next release/update.
Engine RPM is automatically increased by DECS when water is activated, but actual water flow depends on several variables.
It is very much like the RPM in your car engine that changes whenever you turn on/off the AC.
TO get accurate target elevation you must first lock a spot with the DMT so ARBS can calculate ballistic impact point accurately. This is valid for both AUTO and CIP.