I have a 1970 Evinrude 85 purchased last year .Ran fine then but it has started cutting out soon after starting then fine all day . Now the problem is getting worse. Used to be once then fine but now lots of times. Motor will start and idle fine then just die cold when you give it power. Ive ran it at home and when it dies there is no spark which leads me to think its electrical in nature. Sometimes it starts right back up and sometimes it take many tries. My thought was maybe a nuteral safty switch or throttle safety switch bad ?.Would hate to see the old girl go . Any help appreciated Thanks