how to get 90% Model quality on M30 and up

[radharamana]

I followed the instructions given in few sites, which basically consist of making your mt4 offline, deleting old history, downloading m1 history, importing it, converting it to m5, m15, m30, h1, restarting. My problem is that for m15 i'm getting model quality of 90% but m30 and upwards is giving me model quality n/a. The period converter has created the history for m30 and up or my test wouldn't work at all. 

Please can someone help?

Thanks in advance.