Chainsaw Repair

searched some more, this is all i found:

wiseco has coated rings, but can't find a chart listing ring dimensions other than bore size.  too bad, because they make rings 40 mm on up.  their coated rings, must be coated with gold, anyway. 

my thought was that rings are relatively inexpensive, some advantages to be had with coated rings over non-coated.
gotta use whats available in the end.

regards
-joe