My Singer 99 and my Supermatic (Elna 2) have knee lever controller, I adjusted easily to them both and haven't had any complaints. I have a rectangular work table and as long as the machine and knee lever is in right position to my leg it all works effortlessly. The speed controller on my Elna is very responsive. I have to correct the price I payed for my Supermatic, it was $40 not $30.
Last edited by Mickey2; 08-14-2018 at 03:17 PM.