[Avodah] Shva Na's etc.

[Yosef Gavriel Bechhofer]

As sha"tz during my aveilus for my mother a"h I daven out of the large 
AS siddur. It has started me trying to do, one could say at long last, 
trying to do shva na's.

I also was caught once saying l'eyla in kaddish me'l'ra. Embarrasing. 
The AS does not indicate me'l'ra's.

The siddur I use personally, the German Roedelheim siddur, does not 
identify either.

I am soliciting recommendations for an Ashkenaz siddur that will help me 
out with these (and perhaps other) enhancements of tefillah.

Thanks!

KT,

YGB