[TR] TR3 Starter Problem

[terryrs at comcast.net]

When I did the restoration 10 years ago, I swapped out for a gear reduction starter.

Toward the end of last driving season, I frequently tried to start the car, but the starter would spin without engaging the flywheel.

This week, seems worse.

Since I just rebuilt the engine, I know there are no broken teeth on the flywheel. I expect it's the solenoid.  

Question...is there any experience with the solenoids on these after market gear reduction starters failing?

Terry Smith, '59 TR3A  TS 58667
New Hampshire