Well I finally got the ROPS installed onto the tractor! The instructions that came with it were easy to follow but lead you down some dead end paths.
When I installed mine they said to mount one side and then the other, align the top and install the top splice plate and then tighten both sides down. That worked fine, then they eventually told you to mount a connector right behind seat level. Well that would not fit between the ROPS halves with out taking them back loose and spreading them apart (the bends in the material expands the width so the connector would not slide down from the top). Well that causes the splice plate at the top joint to come out of one side. The two sides were not exactly the same height so they now sprung out of alignment....
This is how I finally got mine to work out easier:
First spray all of the threaded holes in the back of the tractor with lubricant/oil.
(don't tighten any bolt/nut very much through out the installation until they are all installed - or you will be loosening them!)
Install the splice plate at the top into one side.
Install the studs into the CORRECT holes (the top set of holes that held on the top link bracket - NOT the top set in the back of the tractor).
Lift one ROPS side onto the stud and put a nut to hold it on - don't tighten it down though. (having two people lift would be easier since these are fairly heavy)
Put one more bolt into that side to keep it in place and stable - don't tighten them much.
Put the other side on in a similar manner. Don't connect the top.
Put in the connector plate (near the seat level) that connects the two sides together. Install one/ bolt to hold it in place.
Install all of the bolts through the ROPS into the back of the tractor. (it will probably take some amount of prying/lifting/cajoling to get them all to start.
DON'T tighten them down, just get them started a few threads in.
Align the connector plate and install all 4 bolts.
Hopefully the top of the two halves are also aligned and the splice plate is in place.
(The two halves on mine were about 2 inches out of vertical alignment and about .75 out of front to back alignment. I had to use a bit of persuation with a come-a-long to lift one side and another to pull other side down and a bit of prying to get them aligned)
Get the splice plate at the top in place and both bolts installed. Snug these a little bit.
Tighten all the bolts/nuts into the back of the tractor, tighten the connector plate, tighten the splice plate at the top.
Torque all of the bolts as required by the instructions.