I have a 94 Sunsport with the 5.8 Pro Boss 351 Windsor engine. I continue to have the "Hot Box/Vapor Lock" starting issue when the boat sits for any length of time after being run. I am using Stabil 360 at the volume of 4 oz per 38 gallon tankful but that doesn't seem to help. The quick fix of pouring a cup of water on the low pressure pump worked the last time but I would really rather find a more permanent solution.

Any suggestions?