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Sometime they are easy, sometimes they can be a bit difficult. Drift toward the ejection port side, use solid strikes & a solid base to support the end of the barrel.
I had one & it was ok. The problem is that people often do not do the following before getting the tech sight. They don't get a trigger job done. They don't sort out the bedding. The results you get with the tech sight will be more satisfying if you take care of these 2 other things first. ymmv - Tony )
PS: imo, the reason for the wide front post on the sks was to make it more useful as a close quarter battle rifle. I also have a thin front post & it's okay. But if I was to use my sks for woods hunting, I would think about putting the wide front sight back on, or maybe getting a set of fibre optic open sights. Lots of people use hunting rifles with high vis open sights & they work beautifully set up like that. Lets face it unless you are going to just use your sks as a range gun, the other use would be as a capable if a bit heavy woods rifle.