[TR] TR3A Starter Solenoid buzzing

[Art McEwen]

It buzzed a couple of times when I started it up for the season 
yesterday but it did start.  Today all I get is buzzing.

I'm assuming there's nothing I can do to fix it (tried hitting it with a 
ratchet handle already so don't suggest that)?

Will an ordinary modern starter solenoid do until my replacement comes?  
I have a modern Trombetta 12V 3-post solenoid lying around the house, 
I'm assuming I could only damage it and not anything else if I tried it....

Thanks,

Art