@calsz06 Well I guess Beth never got the trucks or never worked out the issue with the screw because as you noted that post from Beth was over 3 years ago and I just checked her website and there is no mention of those trucks. She currently does list the Weaver (made by MTH) truck in 3 rail. I'm not sure if it is in stock. The current price is $31.95. Thanks for letting me know about the Atlas website. I will check it again periodically.
@Dave_C Thank you for pointing me in the direction for extra information on what these trucks are. If I am going to pay top dollar for a set of trucks I would much prefer that they just bolt on without modification. Having said that I still might buy a pair or two.