I love my little EZ Entry cart, but for a couple of things. One is the rattling of the joined shafts. I don't know if it is possible to replace metal shafts with wood. Has anyone tried it? The other is more important - my aging back is resenting the bumpy ride we get crossing frozen fields. I am having the new seat redone with more, better padding. I am thinking of adding a gel material. Has anybody tried this? I also added padding to the saddle area to save Consuelo from a pounding, though her harness saddle seems to be maintaining some spacing above her spine. Despite the frigid temps, we go out almost every day for about 45 minutes.