Fixing to start on my 2nd MT and have a question on the dampers. On my first build when I put my dampers in the head and got everything tight it was very tight and rough when moved. After taking it back apart I noticed the dampers didnt fit flush with the head when inserted. I had to trim the dampers to get the head smooth when the blade grips where tight is this normal?? will it hurt anything?? I also notice they send some really thin spacers for the head does anyone use them and if so how many per side??