[change ps 613u pots]

i acquired a non-working ps 613u power supply
two 2200uf caps had exploded
i replaced them and it appears to be working
my complaint is the voltage and current pots are very sensitive
it's near impossible to adjust them with any precision
i'm thinking to replace them with multi-turn pots
is this a good idea or a waste of time

https://www.velleman.eu/downloads/2/ps613a502.pdf

[120 volt ac dip]

I am just a tinkerer so I'm looking for advice. I have a project using an ESP8266 to control a light. I am using a Panasonic AQY280EH to switch the light. What is the safe protocol for mounting and connecting a device that is using a high voltage.

Thanks