Hey guys, recently picked up a 15 speed Nishiki Cresta with downtube shifters as my first road bike. Unfortunately I'm finding it pretty difficult to shift between the gears. Mainly, I don't know what the right hand position would be to stay stable while shifting. I'm also unsure as to how far to move each lever before its been moved too much. Any other general advice regarding downtube shifters is appreciated as well.