My Onan drawer slides are worn out. Generator is sagging and despite new cushions, it is bottoming out on the power drawer housing. Any one have a spec on the drawer slides? Cinnabar has none available used currently and when available wants $100 each for each for a used one. The generator is estimated to weigh 479 lbs and replacement slides would have to be rated for a combined 500 lbs. The slides are about 3" tall and extend for a total of 44 inches from the back of the large part of the slide to the narrow slid out part end. I am finding several drawer triple slides that meet those specs on line but wondering if anyone has ordered them and done this job for further advice?