Distorted FM after replacing some capacitors

[Michael Nachlinger]

Hi,

New to your forums. I purchased an 800B about a month ago. So far I'm refinishing the Chippendale cabinet. Initially I replaced the cord and broken fuse holders. It had a broken rectifier so replaced that and plugged it in, I new better. It worked on AM for about 3 minutes then kung pao radio. Both rectifiers blew out. Replaced C95, C94, C93. Back to AM, no SW or FM. Replaced a dead 6AG5 FM mixer tube and had good quality FM sound. Cleaned some contacts and the SW came alive.

Next I installed a missing C91 with 30uf 500v., replaced C88 with a 30uf 500v., C33 with a 2x 32uf 500v., C31 with a 30uf. 500v., and C34 with a 30uf. 500v.  By the way, C95 is 15uf. 600v. now.

The C88 bathtub was replace with an axial electrolytic, no shield. The resistor across C88 is 2,000 ohms instead of 1,500 ohms. I have to get a replacement.

AM seems to be a little improved, could be my imagination. The amplifier is much stronger (new 6SL7 and matched Sovtek 6L6GT's), but the FM is now distorted, not terribly, it's listenable, but much more distorted then before replacing the capacitors. On a whim I removed C91 and the amp lost 3db +- with no change in the distortion.

Any ideas as to what I screwed up to cause the distorted FM section? Where bathtub capacitors used because they supply shielding and should I be hollowing out the bathtubs and placing them back over the replacement capacitors? Also I did not put the cans back over C93 & C94. The replacement C95 is huge and under the chassis. (I did consider adding a choke in front of the replacement C95 to drop the voltage because of the extra value 15uf vs. 4uf capacity but did not do it, yet.

An help would be much appreciated!

Thanks,

Mike