Whalchearts Valve Gear for O Gauge

[Davebrian]

Back in the seventies (I'm very old )I used to scratch build O gauge fine scale for my garden railway, I also built commisions for model shops. I used to get wheel castings from Charles Covey who seem to have disappeared (now found them at Walsall Models). I also got etched Walchearts valve gear sets from somewhere. I am now getting back into modelling after a 30 year lay off and cannot find many of the whitemetal and etched castings I used to use. In particular Walchearts valve gear. Any scratch builders out there who can help please?
Also would appreciate where to get brake hangars and shoes and dummy Tender bearing/suspension castings. I am building a BR Standard Class 7 "Britannia". I am capable of fabricating a lot of the normal white metal casting parts but to find some valve gear would be a major plus.