Hey guys, this dbx 215 eq works only on one channel, other channel had simply stopped working one day so the unit has been shelved for like 2 years:

I need to use only one channel for an experiment but before I would like to spray some deoxit to clean the working channel as I had some scratchiness turning the volume knobs. From these pics, can you guys advise me on exactly where the deoxit should be sprayed please? Also I am guessing I should not spray the individual sliders from the front?
https://i.postimg.cc/CxPxFmy5/IMG-2863.jpg
https://i.postimg.cc/k48JvC2R/IMG-2864.jpg

I need to use only one channel for an experiment but before I would like to spray some deoxit to clean the working channel as I had some scratchiness turning the volume knobs. From these pics, can you guys advise me on exactly where the deoxit should be sprayed please? Also I am guessing I should not spray the individual sliders from the front?
https://i.postimg.cc/CxPxFmy5/IMG-2863.jpg
https://i.postimg.cc/k48JvC2R/IMG-2864.jpg