Every time i go to my boat at the slip it is VERY hard to start... I go threw a Batt trying to get it to kick over.. I use the cold start to try also.. I know i have to replace the tigger becaus ethe wires are beat.. It has great compression, gets spark, and the gas is good.. It drives me crazy trying to start it.. Any tips on this would be great.. Should i go to a hotter plug?