Sunface red dot repair/mod

Little repair on Red Dot Sunface.
It oddly had a stock detented Sundial which also only went about +/- 1v. All my other songs Sunface have & kinda need more range. I like 2v to 8v without having to open up & get at the internal trim pot.
Tried 10k needed 25k to get better range. No detented either.
2nd video showing range & sounds for those who don't know. Less bias doesn't clean up rolling guitar vol back. Higher bias better clean up, fatter less fuzzy, very high bias starts to get fuzzier & compressed.