Just came across one of these machines , set up with a roller foot, and seems to work fine...without thread...The seller didn't have any thread and it never crossed my mind to bring thread with me. The needle that's in the machine right now is a size #21 Anybody here familiar with these machines ? I am looking into using it for leather , anywhere from 3oz to 8oz max (in 1-3plys probably) with #69 or #92 thread . I have the CB 4500 that works fine on 10oz with the #138 thread but I need some