OT, apologies. A friend is trying to source 3 x 572-Bs as plug replacements for his Ameritron 811 tube amp. None appear to be in the UK. Suggestions? Callum McCormick http://www.m0mcx.co.uk/ t: 07976 631881 65 Glendon Way, B93 8SY "Nordhavn needed. Send money."