Bside ZT302 rotary issues

[waste]

I have one of these small but very convenient meters, but it has contact issues of the rotary selector. I opened the whole thing and I found out that the rotary dial is full of some fat . I don't know if I should better clean it or not. The traces are super clean and have no issues.

Any people with experience on these units??

thanks

[waste]

To answer my own question for other people to profit from it, I had to add a little 3mm screw , a selflocking nut and a spacer to make sure you have enough and consistent contact. The attached pictures give a better idea

[precaud]

Thanks, I've had one since it came out and will keep an eye out for that issue. Mine is good for DC and Ohms but the AC is very unreliable.