I saw anothe rpost about INS alignment but my issue is a bit different :
After a full alignment, when I double check my INS wpt pointed to in the HSI, it is off by 10nm N-N-W from the wpt shown in the f10 map.
This causes me to miss some interactions.
Additionaly, when I choose to go check some tallies at a given GPS coordinates, I can't seem to go to the right location.
I don't have the actual values right now, but even when converting to deg-min-dec system, I'm never in the right spot to continue the radio interaction stating I confirm the position of the possible hostile (It worked once but I go shot down a bit later, and can't do it again now).
Any idea of what could cause my problem?