[R-390] Recapping question

[n4buq at knology.net]

I'm replacing some high resistors in the crystal deck and in the process, 
am replacing some of the bypass caps.  I suspect they could be partially 
responsible (due to leakage) for the resistors going high.  They are 
the "Erie" brand disk ceramics and their outside surfaces have turned to a 
sticky, waxy feel which make me think they could be comprimised (not sure 
about that).  I decided that while I was in the area I'd replace them.

My question concerns the placement of one of the caps.  In the following 
image, the original cap was connected between point A and the grounding lug 
at point B.

http://www.knology.net/~thelanding/crystaldeck.jpg

I'm curious why they wouldn't have chosen to put the cap right across the 
transformer at points A and C.  It seems it would have made for less 
clutter in the other area.  Also, from point A to point D might have been 
just as convenient.

Is there a good reason to go with A to B?  Maybe it is better to have the 
components soldered to a common ground point?

Also, for anyone who is interested, here's how I terminated the new RF-to-
IF cables under the RF deck.

http://www.knology.net/~thelanding/cables.jpg

Never mind that thing that looks like a blob of solder above the upper-
right-hand connection point.  It is a piece of tinned wire I clipped and 
didn't notice until after I had taken the picture.  When I tried to 
retrieve it, I inadvertently knocked it down into the transformer.  Rats.  
Something else to remember to do before putting this thing back together...

Thanks,

Barry - N4BUQ