[R-390] OT: Blaupunkt Verona Alignment Questions

[Barry]

I have an old radio (Blaupunkt Verona) I'm trying to get tuned up and I have a quick question or two that I'm sure many of you can answer for me.  I've posted the schematic for the FM section here:

http://n4buq.shutterfly.com/pictures/25

The alignment procedures I have (there are two similar models and I have procedures for both) don't mention anything about C906 (0.5 - 3.5pf trimmer from plate to cathode of the RF amplifier circuit).  What does it do and what should I be looking for in the way of adjustment?  I'm guessing it's a neutralizing capacitor and should be adjusted to reduce the tendency of the amplifier half to oscillate but I'm not sure of that (nor am I sure how to adjust it if indeed that is its purpose).

L902 is also unmentioned.  I assume it's adjusted for minimum or maximum signal but not sure which.  There is a similar coil on the AM side that is to be adjusted for minimum but I'm not sure if the two coils have the same function so I could use some guidance there too.

Any help is appreciated.

Thanks,
Barry - N4BUQ