Ryan,
We ran into the same problem here recently with our Toro sprayers. Check the link below.
https://www.surpluscenter.com/item.asp?catname=&qty=1&item=5-1680-6I researched actuators for nearly two days before finding these. To buy an aftermarket Thomson (the manufacturer of Toro's actuators) it was going to be just under $600. The ones in the link above came out to $267 with shipping. We've been using them for three months now with great success. You may have to measure your throw on the actuator to see if it's the same 5.3" as the ones we have. I'm not sure off the top of my head what size the 1250's are equipped with. In the event they are not 5.3" stroke, just search for "linear acutator" in the top left corner of the page and all of the other sizes they carry will be displayed.
As for the steering column, we have had good success with SunSource Hydraulics. They are a national company with locations across the U.S., including Kansas City. Check the link below for the contact information.
http://www.sunsrce.com/service-repair.htmlI hope this all helps, best of luck!