Thankyou Curry Crazy for having faith in Darth. ;D
Here is another reason why the taste is in a lot of BIR`s ( but ive found not in all, anyone else had this ??).
Down here in Cornwall there is a BIR that is reputed to do most of the training for the new Take-away Resteraunts, sort of a HQ for the region were they train the up & coming new chefs,now that is a good reason why 90% of the BIR`s have the taste but not all & the ones that don't tend to be in the category " Had a take-away there, never again it was awful"!!
I still believe it is a matter of either technique(timing etc..) or one or two missing ingredients, I'm close now
& slowly buy surely buying every logical spice available to experiment with. And Ive come a long way with the final Curry itself by pure experimentation, But have this forum to thank when it comes to the base gravy. I am confident that in time we will get there, but lets enjoy this journey & not rush its end my young apprentices.

yours DARTHPHALL.