Outer wall adhesion issues

It’s a shame my franken prusa creates far stronger parts and its 1/3 the price. I love the zortrax machines. They’re very well built however the downside is being able to control anything. If I was able to manipulate the parameters, I wouldn’t be regretting my expensive purchase. I literally cannot make parts that withstand any abuse. Just pretty things. Therefore my business is limited to other machines to produce reliable parts.