I love Raiders....but there are minor things that keep it from being perfect...Indy packs a revolver to go to Marion's, comes in with an automatic.....Indy and Sallah through rope into the Well of Souls and the rope is laying across the lip of the hole, as Indy climbs down it you can see it extending up past the lip into the air.....Indy and Marion break out of the tomb with snakes, and an Arab can be seen sitting right there doing nothing (there was a scene cut where he faints at them coming out).....great movie, I love it....but not perfect.
There are imperfections in T2 also (the date of the apocalypse, John's age....)....again, great movie, I love it....but not perfect.