Hi, I just wanted to know can I get TRS 2006 locomotives to work on TRS 2004. The reason is I'm getting the QR Beyer Garratt, the body of the boiler, tender and watertank is TRS 2004 compatable but the bogeys for the Garratt are TRS 2006 compatable. Can I get the bogeys of the QR Beyer Garratt...