I have had a knee lift with both my old Bernina and my current Janome and only tried it a time or 5 as it really bothered me. On the other hand, my Janome has hand controls (start/stop etc. buttons). After a short trial period, I found I loved it. It is hugely easier on my bum knees. Not every invention helps each of us. Does your dealer have a suggestion? Actually my Bernina dealer was not particularly helpful, whereas my Janome dealer will trouble shoot forme over the phone. Not all dealers (of any brand) are equally helpful.