08-13-2012, 06:13 PM
Well, if wiggling tubes changes things, the sockets and/or pins need cheaning and retentioning which has been much discussed. If you replaced the electrolytics, good, you should/must replace all the wax capacitors and out of tolerence resistors as well. If there is a radio hobbiest club or oldtimer like me in your vicinity, you can get tubes tested, however mostly if they light up, and do not drag down the B+ there is a good expectation they are still working.