Many Thanks again for the info and the link to "PORT LINES HOBBY SUPPLIES ".
We own the following domain names, ANY ONE of which should bring you to our website:
My non-internet train repair friend Ed has serviced the 312 loco, which needed general cleaning and E-unit repair. The train owner wants it back for Christmas operation (without the smoke for now) and meanwhile we are considering options to repair the smoke-in-tender unit. At the least, it needs the bellows material replaced, and smoke element and wick replaced.
I see that Port Lines offers an option to convert bellows units to cylinder type. Can anyone tell us specifically about, how well does a bellows unit function if we repair it, and is the conversion a good option? I'm clueless about references to single-chamber and double-chamber smoke cylinders.