I changed stock trigger to 3.5lb one and stock trigger spring to softer one on my g-17 . took to the range and got kicked out because my gun was shooting nice doubleshots with every single pull of the trigger. then I changed the spring back to stock one and glock shoots like new again. how to explain that? and why slightly softer spring would do that?or was it me who did something stupid? my gun is not abused and has about 3-4000 rounds through it. i'll change it back again just to see if it is going to be the same.it's actually nice to have a gun that shoots doubleshots constantly [if you expect that]. with some practice it would look like fool auto from outside. anyway,any ideas would be greatly appreciated.