many thanks for all the thoughts they are appreciated - you never know what will lead to that break through.
alas i'm stuck. ive now made Rev2 base and starting to understand the real base and how poor mine is in comparison.
this is all hit and miss and wont put the detail into this post.
there is an overriding flavour in the real base - that i've never come across. if you asked me to say what it tastes like i'd say i don't know. if you forced me to say it would be some form of gravy browning but i'm convinced it's not.
have attached pic of the Rev2 comparison which shows the big gap. easy to pick out the real deal

summary so far:
1) not blended
2) tamarind is in
3) no turmeric
4) lots of oil (none at dish frying like i think Taz)
5) on look out for this missing taste - going to buy fresh methi and rose petal (if i can get in warrington)
on the upside - the adil recipe and chef masala developed earlier in this thread are delivering. everything has been eaten and enjoyed.