Have a 870 SPS new that I have fired 25 times. I like the gun 20in barrel thumb hole stock como good, light easy yo carry, feels good in shooting position, not a hard kicker. My problem is the trigger feels very hard, does the thumb hole stock make a difference in the feel of the trigger pull? I own 4 other 870's and have never had this problem, just wondering if anyone else has had same problem?