This is a job for myself I don't have a mill to do the job or the experience. I have the 4 casting from plastow. My original strap snapped hence the need for new set to be made before the others go the same way and I have the drawings for them

Andrew, I am what you would probably call a grease monkey who doesn't know the difference between a smoke box and a fire box, goes out and buys and engine to show off with and claim all the glory for it? Well some of that may be true. I do not have all your years of experience working with machinery I don't have apprenticeship or college training, I like thousands of others just have a passion for steam but not the skills to build one or the finance to buy a kit one so I got one needing restoration. One of my "engineering " friends said he would do the work for me but after 5 years waiting I asked for it back and it arrived in 6 boxes. I worked out how it went together as all parts were already done only to find I had to buy new boiler so stripped it down myself got new boiler and rebuilt it myself. Unfortunately I don't have a workshop full of thousands of pounds worth of Mills and lathes or the knowledge on how to use them. Yes I could go and spend few grand buying them and spend a few years gaining experience just to do 4 straps and have no need for the equipment any more although to me it makes more sense to pay someone a few hundred pounds to do the job properly for me. I hope that clarifys things for you?