Hi, A short question and sorry if it was already asked. I just bought a shiny new road bike replacing my old mtb. The new bike is equipped with Shimano 105 set all over, 2x10 gears. With the mtb's 3x9 set I should not use all 9 rear gears if the front one was on either side. Is there any limitation like that on a 2x10 set? I wonder if I can just freely shift into any of the 10 gears - especially as the 105 shifters lack any indications about what gear I am in... Thanks and BR, Rudy