I bought a set of LPA adjustable FO sights for a S&W 625-6 in .45 Colt. The LPA rear is about 0.15” higher than the factory sight and the front is 0.06 lower, so the gun shoots 8” high at 25 feet. With the factory front, it still shoots 5” high. Factory front - 0.34", LPA front = 0.28" Looks like I need a front sight (preferably FO) that’s 0.4” tall and I can’t find one. Any ideas? Oh, and it's a pinned front sight.