Yorkshire Exile

That's that then. Hornby don't appear to make Collett Non-corridor Brake Composities so it looks like I won't be able to create a 'B' Set!

As a newcomer to this forum I hope you will excuse me if this question has already been asked, but can someone please clarrify for me which Collett non-corridor coaches I need to form one of the two-coach 'B' Sets used in the west of England under the GWR. From what I can gather these 'B' Sets comprised of two Collett 57' Bow Ended six compartment Brake Thirds. Hornby produce these in both Left and Right hand versions. Am I right in assuming that I would need both a Left and a Right hand version to form a 'B' Set in order to correctly allign the offset roof vents once coupled together. I've noted that the Hornby left and right versions of these coaches are numbered consecutively. So, for example, the Right Hand brake third (Hornby model number R4877A) carries the number 5504, whilst the Left Hand brake third (Hornby model number R4876A) carries the number 5503. From this I assume the two are meant to be used together for form a 'B' Set. Many thanks in advance for any help with this.