A40 Part Substitutions

Thank you all so much for making your splendid designs available on the Web. I took Mr Pass's advice on the need for adequate heatsinking to heart, so I hope this somewhat radical solution will do the trick. Tomorrow I will borrow a friend's Variac to start the inauguration ceremony (at present the power supply electrolytic capacitors are only 35V working, so I must tread gently. Some modification may be necessary here before I can power-up fully). Best regards, Rod Hazell