I got the Lee system last summer and used it on the S2 with the 72 and 82 mm filter rings. Quite happy so far. I now was fortunate enough to find a 30-90 mm S zoom, which has a 92 mm filter thread. My dealer did not have an 92 ring on stock, and I then checked the Lee website and saw that they don't make a 92 mm ring (a 93 yes but no 92). Any suggestions.