I picked up a real cheap snub nose .38 from a member here last week. Shoots reliably and lock-up is tight. I found that if I line up the sights it shoots 4" high at 7 yards. After running a couple boxes through it I found if I hold the top of the front blade in the middle of the rear sight they land where I want them. I am able to hold 1 1/2" groups like this, double action, at 7 yards. Is it worth trying to build up the front sight or just leave it as is?