I am unsure what ratios you are applying on your blends, but intensity may increase when you include far more harmalas. PS: here is a thread describing how to organize changa from its substances. There exists also an alternate preparation proposed by Nereus along with a little bit of discussion https://wheretobuychangadmtgerman08494.blazingblog.com/36668170/changa-copyright-for-sale-an-overview