Having an intermittent issue with my starboard engine starting could use suggestions with. Just every so often when I turn the key over for starboard motor, a 351 Volvo, it acts like there is no juice. Jump the solenoid with a screwdriver and it fires right up and runs like it should. This is an intermittent problem at best, may turn over 20 times with no problem, 21 time no go. I have had Starter solenoid replaced with no solve. Thanks in advance for your suggestions.