if it sounds like the bendis at least contacts the fly wheel but does not turn it there is a small chance that you have worn out teeth on the fly wheel. but some how the the darn thing always manages of stop in the same place so it would fail more that 1in 10 times. i dont know that the starter would not work without the sloenoid working. try tapping the starter with a hammer while cranking it that works some times and is indicitive of stuck parts.
good luck