I would like to use a threadless stem on my threaded road fork, and I need to get the bars up pretty high. Who makes the tallest threaded-to-threadless converter? I would rather not put a stem riser on top of the threaded-to-threadless converter, since it seems that would add a flex point and add up to possibly unnecessary extra weight with the additional clamp mechanism. So a tall threaded-to-threadless adapter would be ideal. Nobody seems to consistently show hight specs on these with the online sellers. This seems to be a common need so I figured somebody on the forum might have already done research that can be shared.