It is practical to make your camera think all lenses are A type.
Then the flash will work properly with all your non-A type lenses.
I've been using my K100D in this mode for months now and have had no problems & haven't seen a downside (except that the EXIF reports whatever f-stop you've set in the viewfinder, not what you've actually set on the lens.)
It is easy to do and easily reversed. Just remove the 5 screws holding the camera side of the lens mount, put metal foil over the A pin & replace the mount. There are no wires or fine adjustments to worry about.
After this, when using a preset lens, make sure the f-stop shown in the viewfinder is as low as it will go (this prevents the camera from trying to stop-down the lens during exposure; that's ok, because you've already stopped it down by hand.)
Dave in Iowa