Brian,
Oh! If only you'd posted the photo of the Warwell "B" a couple of weeks ago. I've just about finished my kit and was mystified as to where the handbrake was, I couldn't believe that a vehicle so heavy wouldn't have had one, your photo revealed all though. I guess that the handbrake wheels were positioned at diagonally opposite corners as the photo of W32906 in "Pre-Nationalisation Freight Wagons on BR" D.Larkin, Bradford Barton shews the same side but the opposite end minus a handbrake wheel.
A couple of tips before you commence the build, (1) don't take off to much material from part 11 when removing the cusp, it's not a very tight fit in the deck cut-out, (2) don't forget as I did to insert the 6BA screw in the bolster before soldering it to the underside of the deck and lastly, try to insert the wheels in their frame before folding back the tabs on part 4, I found that they had to be eased back a bit as they interfered with the flange of the outer wheelsets by a small amount when fitting. Other than that I've thoroughly enjoyed the build and will probably buy a second one.
Rather than using Roxey wheels I chose Peartree Engineering 2ft 8in loco wheels, they benefit from not having pin point axles and one of the wheel faces screws on/off-made life a lot easier. The side frames only needed a couple of turns with a reamer to get the Peartree bushes fitted.
All we want now is for Paul to re-post his photos on his site.
Regards, Mick.