Can anyone point me in the direction of someone good that can rebuild one of my Marine Machine steering rams?

I would take it apart and look at the o-rings and the bore.if its scored at all,take it to a hydraulic shop,they rebuild these rams all the time.

I believe mine were marine machine.
Steering Rams Rebuild

Thanks! Yes, yours look very similar to mine, other than I don't have treaded, adjustable ends on mine. Where those off your AT?

I'm going to look up to see where a local hydaulic shop is, looks simple enough to repair. Mine have a leak, most likely in the wiper. I just discovered a wet area under one of my rams. I took my finger and wiped it along the rod, and sure enough, fluid.

I have shaft material for them . I have machined a number of them for customers

Those were from the system I pieced together for my Panther. My AT has Mayfair which are the same rams. I spoke with MM to get another cylinder barrel after I blew the cap off and stripped the threads.
MM did tell me that the caps might be loctited on so do not crush the barrel trying to remove the caps. Add a little heat and they should come off easy.