I gave up cooking BIR at home some years ago George as I was never satisfied with results. Started out with Pat Chapman, Kris Dillon etc and was even a fully paid up member of the curry club back in the day.
I turned my hand to the more traditional curries some time ago so I have tried those from various chefs including Camellia Panjabi, Cyrus Todiwalla etc. I have also sought out Parsi cookbooks as opposed to Indian to try an authentic Dhansak. Some have been good and some not so good, but the recipe that started this thread turned out very well on the day.
T63