Well, I still haven't had a chance to fully play it (thanks rotator cuff🙄) but I'm thoroughly impressed with it. Build quality is amazing and it sounds great although, yes, the knobs are an issue. Initially I thought the shafts on the blend and treble pots were bent, but it's just the crappy knobs that won't seat flat on the shafts - reminds me of a playground witch's hat as I turn them. They're aluminium, but have a plastic bush inside, and I think that's the issue. Anyway, easily sorted and for the price of the bass it's no great hardship to spend a few more quid, and it's only aesthetic - they function perfectly well.