I Want to build the link telephone system by Austin Hellier (as per the Electronics-Lab Site. http://www.electronics-lab.com/projects/telephone/004/index.html )for our miniature railway club, My question:- WHAT ARE THE VALUES OF CAPICATORS :- C4 and C5 on the actual circuit diagram? THEY ARE NOT IN THE PARTS LIST EITHER!!!! In the parts list C4 should be C6 or something as it is mounted off board. Has anyone built one? Has anyone experienced any difficulties? I have all the parts except for THE C4 and C5. PLEASE PRETTY PLEASE? OR CAN SOMEONE GET Austin to contact me. GETTING DESPERATE!!!! ???