Strike hard Gear out of the US makes stripper clip pouches for the SKS. I have owned a few of them in the past, great gear, well made product.
I have a Chinese chest rig. Fits fine but I have rounds come loose from the clip when removing from the rig.
You need to replace those chargers. The material they're made from wasn't intended to be reused several times.
I find they run just fine until they don't. The little retention springs get weak with use. Some are better than others.