I have been restoring for about 18 months using a TLC with 8 oz. weight. I just saw KONGs pictures and was encouraged and saddened. KONG said his (IT) length is 1.5" and his pictures really look good. My (IT) length is 1.25" on the fren. side, however on the front side it is only .75" so it is very UNEVEN. What am I doing wrong and how to correct? Thanks.