Hi George,

Thanks for the info. If you do go with a Sanden, a likely candidate is the SD7H15. There's also a conversion bracket that fits the Sanden to a York style mount: 990-90026.
http://www.apairinc.com/iView.asp?Ca...nversion%20Kit

I haven't done anything about the caster yet. We'll be heading to Disney World this coming fall so I'll have an opportunity to stop by Josams in Orlando. They're about the only one's that I'm willing to trust with the job. Thanks for asking, I'll keep you posted. Take care.