Before I buy a William 22109 44 Ton Switcher, are there any coupler compatibility issues?

You shouldn't have any issues with the couplers, they seemed pretty generic to me.  I predict some potential issues with broken handrails, the plastic handrails are lame and fragile!

Thanks John.  I too have heard about the weak and breakable handrails. 

But, aside from that, I haven't heard anything bad.

And, these diesels, NIB, run about $75 cheaper than anything comparable. 

As long as I know about a defect well in advance, I can make a decisions to live with it. 

Or, no kidding, when I buy one of these, I may just start out by breaking the darned things off, front and back, to be done with it.   After that, nothing to worry about.

Mannyrock

Mannyrock,

          These are neat little engines.  They pull well and look good as they trundle on their merry way.  Mine is in the Southern Railway livery and I am quite happy with it.  I have not incurred any coupler problems and in addition to hauling Williams rolling stock I also haul Lionel and MTH.  So far my flimsy plastic handrails are still intact but you can't let your guard down on them.  Very fragile indeed.  Pull that trigger!

I thought they run pretty nice,

I've had my William by Bachman 44 tonner for a few years now and have encountered no problems with it all all ( minus the delicate handrails ... which I broke and repaired with glue ).  My 44 tonner ( in Pennsy livery )  couples to everything K line, MTH, Atlas O, Modern Lionel, Williams, and  postwar Lionel included.  They are a great bang for the buck  Go ahead and pull that trigger

OK Guys,  I pulled the trigger.  It will arrive next week.  (While my wife is at work!)

I think now that I am going to look for a old metal frame from a large switcher (such as an NW-2), that has metal guardrails attached or built in to each end.  I will cut them off with an angle grinder, cut off the existing plastic guard rails, and mount the metal rails with screws.

So, , , , about all of those boxes of train junk that everybody says they have in the basement?