Hi PD's - Ian - I understand your concerns re out of scale sizing of the Cheddar steam whistle & have been experimenting with computer modeling of a saxophone reed scrunched up in the boiler relief valve piping [3/72" inside diameter which is very, very, very small], so naturally the shaping of the reed is critical - but to date I cannot get a realistic :music from it
I am sure the design of the original Cheddar product is for vertical installation, but suggest three options
1) advertise on E-Bay @ x 10 of your purchase price - some fool will buy it
2) melt it down as scrap ballast
3) offer it back to Stuart Turner [UK] as a collectors item @ X 200 of your purchase price + freight + insurance
When I reflect upon my thoughts I think option 3) may be the best - Derek