I run my Williams GP-9's with an MTH Z-1000 and have no problem.
Also run my Williams SD-45's with a post war ZW and have no problems.
With my Williams F-7 set I had to add another powered unit to pull a full set of six passenger cars.
My two cents on rewiring, if I rewired the F-7's to run in series a snail would have gone faster than my Williams engines. Maybe my power company has a lower voltage rating or cycle frequency that I am not aware of, so to rewire a Williams for series just won't work for me.
This thing about rewiring a set of motors is something I have stayed away from, and with the brand new WBB you kill the warrenty instantly if you rewire the motors or anything else.
FYI, I have not used a CW-80 with any of my Williams engines. Maybe that transformer puts out a higher voltage or something when used with a Williams engine, so a rewire might be a consideration with that transformer?
Lee F.
