It is a common problem with speed. If you do the searches, you will find a lot of really good threads. I went through the same thing with my 101 and ended up with a limb driver. The muzzy zero effect seems to have the best review, yet they are not yet out for the 101s. The limb driver forces down from the limb action whereas the others force down with a spring which is not fast enough. Their is always the reliable WB but I don't like them (wear, can't really fine tune, less speed). I am not an expert by any means so feel free to explore.