This will show you what I did:
The 1/4" inch shims cost about $4.00 for a set of 12. The pocket facing were about the same. Contact cement was less than $5.00. The new rail cloth was ordered when the Simonis was ordered from
http://www.bestbilliard.com/catalog/1004.cfm?Prod_ID=2
Best Billiard Supply sells the Simonis and everything else you'll need for an excellent price. Now that I have done it I can say it was a no brainer. Before I attempted it I was leary.
I should have noted that as with the original facings I installed two small brads in the facings below the center of the balls. This is in conformance with the original Brunswick installation. The sanding on the facings that can be seen in the photo is the same type of sanding that was done by Brunswick.
As I said before, the table plays as well as before the shims were installed. I too am not one to spend money that I do not need to spend. This was inexpensive ($13.00 plus whatever the add on price was for new rail cloth) if you are recovering the table anyway.
Dartman, the rails play just like they have played for the last 20 years. The new shims have not altered the rebound that I can notice. I read all the threads that talk about extending the cushions to do it "right" etc and I can say from experience that what you see here is cheap, easy and works well enough that good players (APA / TAP 6,7,8) do not know, unless told, that the pockets were shimmed.
BTW I made a pool table stimpmeter that returns the ball to the same spot each time the ball is rolled down the ramp. The return from near the points (where the shims are) is the same as the return from the other part of the rails.
I read the other threads where people triple shim pockets but was not interested in pockets that are anything more than competition quality. While it may not look it in the photo, the pocket width is 4.5" and the the throat action has not been affected in anyway that I am aware of. The table simply plays better.
I could not have done this as well as it was done without the advice of several good people in the table mechanics section. They saved me much time, trial and effort so that I got it right the first time. Some responded to me in PMs so their colleagues would not be upset with the idea that a shoemaker (like me) could get this good a result so easily. They go unnamed but not forgotten. Long live the internet !