[Healeys] starting problem

[healeymanjim at hansencc.net]

have noticed the past few months that many times when the starter on the bj8 spins it will not start till i let off the key from the start position.  does not do it all the time, but enough to get me concerned.  could this be a ground problem or corrosion somewhere?  starter seems to spin engine at same speed as before, but it takes longer to start unless i let off the key.  need some ideas on where to start solving the problem.  hjim