Recently bought a fretted bass, a Cort A6, it's a while since I've played fretted, and I have an odd problem. I'm finding unless I finger notes very precisely I get 'fuzzy' notes sounding; almost but not quite 'rattly buzzy'. Now you might say what's wrong with having to be precise? Well, the problem is having to be that precise about the fingering is slowing me down. Unless the tip of my fingers is placed just so, and at just the right angle, and snuggily wuggly up right behind the fret, I get the fuzzy happening. Happens anywhere on the fingerboard, but more so as I go north of the 5th fret. Strings are almost new Dunlop rounds. I don't remember having this issue in my first fretted incarnation. Does anyone recognise these sympoms as indicating muppetry on my part, or an adjustment issue - and if the latter, what is it? Not aware of issues with the relative fret heights, relief is 0.3mm at the 8th fret, and the action ranges from 2.6mm - 2.0 mm across the fingerboard at the 12th. I'd like it lower but I'm proscribed by the ridiculous bridge adjusters on the older A6, as this bass is.