Usable gears on a 2 x 11 cassette
I am new to the world of 2 x 11 cassettes. My other bikes were 3 x 8 or 9. On my new Sirrus 6, I have 18 usable gears. On the small chainring, the two smallest and hardest gears cannot be shifted into, and on the larger chainring, the two largest and easiest gears cannot be shifted into with a great deal of rattling. Is this normal? I have taken the bike to the LBS since I bought it and had them adjust the gears.