Yeah Al, its gonna be hard to find one on its own, surely that treadle was for a flat bed 45 thats why there is no support. iam sure you could rustle up a support seeing how good the missing parts came out for your machine. i cant seem to find any illustrations of these big treadles?? no parts diagrams, nothing?? maybe if someone near you had one you could copy it by taking it in to a welder and seeing what he could do?? if i find anything over this end i will let you know Al. if you need the angles or what ever i can try and measure them for you. all the best, jimi.