This is one of those things that drive any magiha crazy: I had a lamed, I was fixing to make the tzavar a little thicker. I fixed it in a few movements very quickly. I also quickly added ink to the rosh to make it protrude more. All this was done very quickly with a few brisk strokes. I have a chshash that before I made the rosh thicker ( but after I made the tzavar thicker), I may have had a potential kav moshuch but I was doing it so quickly I never had a moment to stop and think if it was or wasn't. I still don't know for sure, there could have been a bit of the rosh sticking out even before I thickened the rosh but I don't know for sure.
Rav YM Stern in his sefer says that if a sofer makes a tikun and has a bad feeling afterwards that he may have passeled the os momentarily during the tikkun but its only a safek - ie he never really saw it and it's just a worry, we can make a sfek sfaika and say that its ok. The second safek is based on the Smaq who says that if the os was kosher to begin with and then a shimui tzurah occured after the writing, ie during a tikun, it is OK to repair and no problem of lo kesidran, since it was good to begin with. this combined with the fact that there is a safek if there even was a shinui tzorah makes the os kosher in such a case.
Furthermore the whole safek occurred here with adding ink only and not scratching - which would be far worse because chok tochus is midoraisa and therefore safek d'oraisa lehachmir.
I am seeking your advice if I should just assume its OK based on the above or I should put the parshiyos aside and not use them.