has anyone ever dealt with this kind of stuff?? been having minor fuel stoppage trouble ever since I got this 1070 CASE, 1st year it was dirt and crud .. now lately , I am finding vicks salve looking silicone looking crud in the hand pump ,,. ,,and I still have a occasional stoppage in the tank valve ,,. if I keep the tank full I am least likely to have trouble,..i have , removed and cleaned the tank valve and installed a 1 inch stand tube,to keep any crud out , and installed new filters numerous times ,.have run lucas fuel stabilizer , currently trying a bottle of red red heet,each time I fill up ,and have poured in a gallon of 303 hydro fluid,to a full tank also . to aid in clean up ,. all of these seem to get some sort of result ,,. but that salve looking stuff is perplexing