I've got a 2008 Jayco Baja 10Y. In the packet of owner's manuals, I can see that they used a Dexter axle when they built it. But I cannot find any info on which model or what load rating the axle has. It has 6 lug nuts and I think a 12" diameter brake drum. I need to buy some brake parts (drums, shoes) but I don't want to take a chance just based on the appearance of the parts I need. How can I be sure I'm ordering the right parts?