hey guys when you change out the elastomers on the bars how much do you tighten them down. does two threads showing sound about right. just enough to snug them up? and also how do you position the bars to get the best performance? i mean do you try to set them with the pad flat? or would it it be best to tilt them back towards the rider some? does it not matter and just set them to personal preference?Thanks guys in advance!