Greetings all, Newbie here.

I have a question about the E-Z Track auto-reversing system (#44547) that I am considering purchasing. I have not been able to locate the instruction manual online.  I noticed that the package includes 2 pieces of regular 9-inch straight E-Z Track. Is there a specific operational reason why those 2 pieces are included?  Are the two tracks used to balance off each end of the line?  Or can other standard E-Z Track pieces be used also? My reason for asking is that I would love to run a shuttle system with my 85-foot Bi-Level Commuter Cars but the provided 18-inch auto-reversing curves are two tight as the passenger cars require a 22-inch radius. I need to know if the standard 22-inch curves (#44503) would work with the auto-reversing system or not.

Thanks.