Took my Yugo SKS to the range for the first time, and it wouldn't eject the spent round or cycle the next one. The bolt was going only about half the way it should. I decided to cut the bolt return spring (the curly spring that is closest to the butt). I trimmed off about an inch and a half and it started to eject and cycle, but only about half the time. I didn't cut any more off because the people who borrowed me the pliers had already left the range. I think if I trim off another half inch it should be fine. Is there any possible dangers that could come from this? There is still a decent amount of tension from the spring when the bolt is all the way back. I compared the pressure from all the springs on my SKS to my friend's SKS, and they were more or less the same. The gun was cleaned thoroughly before use. Anyone know what could have been causing this or if there is any danger in modding the gun this way?