Backhoe 709 parts help

[JJZ 109]

I've got a 709 backhoe from the 90's, serial #270002588. Has a leaking cylinder in one of the vertical stabilizers. Someone has cut/welded/trashed one of the ends as well has messing a cap up so badly that a spanner or pipe wrench won't get it off to fix the seals.
Trying to find a replacement cylinder from a source other than Bobcat because a seal kit costed me $50 when I later discovered that it could have been had elsewhere for $10-$17. Does anyone have a part number or know where to get one without ordering a service manual someplace? Yes I know it's a good idea to have one, but I'd like to get the attachment up and running again before a service manual gets here if I order one someplace..

 

[JJZ 109]

Scrounged around ebay and found a NOS manual. Got it for a $30 offer. Looks like the wait is on for the book, then I can get a part number and begin the search.

 

[JJZ 109]

Just received a call from a Bobcat dealer about 3 hours from home. Right now we're looking at $600 for a cylinder. Still shopping, there has to be a better deal out there.

 

[JJZ 109]

Found a local hydraulic repair place. No verdict on price yet, they'll call me when they get it apart. But pretty sure it's not going to be anywhere near $600 that Bobcat wants for a new cylinder.
Everyone is baffled why the cylinder maker threaded an aluminum cap into a steel tube. Local shop says they see it all the time and it's going to be fun to get it removed.