i was the owner of the s510 and only used it a couple of times before i got rid of it due to the annoying twang on the firing cycle. Just out of curiosity i looked at the new 410 lite and was pleased to hear no twang when it fired. Just out of curiosity have they managed to cure that annoying noise at last. Admittedly it had no pellet in it when i fired it so have no idea if it is still there when fired with a pellet in it. What is the general thoughts on the new aa410 lites specifically the k series as prefer lightweight rifles now im getting old! Cheers in advance.