joshallen2k,
use the evap milk in the ctm 1st rather than cream - i think it adds sweetness. this alone may just do it for u on the ctm front.
i had made my own curry powder & garam masala for years believing i had more control of the taste and would therefore get (eventually) a better taste. i was wrong. i still make my own garam (but probably perfected it better) but buy the rajah curry powder.
i also used to use only a tandoori marinade for making tikka but felt it lacking. hence i bought the "dark red" variety (TRS, rajah). this was significant improvement and i now use it as a dry rub for bbq as well as for tikka.
on one visit to my local shop the dark red was out of stock and assistant said "pink red" was pretty good (although not convincing) for tikka. found it was way off the mark. however when i used it in the CTM the CTM was much better (significantly).
i list the ingredients in case it may help:
dark red: coriander, salt, fenugreek, black pepper, onion powder, cayenne pepper, cinnamon, garlic, cumin, nutmeg, cardamom, celery, clove, ginger, bay, lemon oil, citric acid
pink red: coriander, chillies, mustard, cumin, garlic, ginger, pepper, cloves, cassia, salt