So I have a brand new Yamaha THR10 that sounds great, but I've found that it's quite noisy with single coils. It's nice and quiet with humbuckers, but when I plug in a Strat or Tele, there's a fairly prominent buzzing. It sounds like typical single coil hum, but there are two weird aspects to it: the on-board noise gate has little to no effect on it, and when I touch the strings, the hum does not lessen at all, like it should, and like it does with all my other amps. The hum is the same whether I'm using the batteries or the AC adapter, so it's not a mains issue. Any thoughts, THR owners, or anyone else?