Nahhhh, not too big m8, especially if you do it this way.....
http://www.qsl.net/g4lna/shack_images/pa.jpg
Very nice shack you have there too Paul. A friend of mine and I, well especially him, were getting quite deep into amps, restoration and home brew. I still have a minty SB-221 that needs to be finished up. We have just had so much bad luck that we are giving our wallets a rest. Torching off brand new tubes can get deep into one's pocket in a hurry!