I recently lost the fuel cap off of my 1993 Larson SEI 18' bowrider,it seems that these are discontinued and were manufactured to an odd size.Other 2" caps do not fit. Can not find anyone with a replacement cap. To change to a new fuel deck is a hassel as the original size is a 2" and now most are a 1-1/2". It is a big job to change the gas hose. If anyone knows of a spare one about it would be greatly appreciated.