Hi! I'm pretty new to biking and an have a question I'm finding rather hard to word. the mountain bike i have has rapid-fire style shifters, and i find these generally more comfortable than grip shifts, but the shifting is opposite on each side: for example to shift up on the left you use the top lever and on the right, the bottom lever. I find this tends to confuse me a lot and leads to mis-shifting. My question is are all rapid-fires like this and if not, how do I tell without inspecting each one in a shop? I don't want to have to move to grip shift but I am prepared to if necessary. thanks in advance for the help.