Hi DB,
Firstly, a warm welcome to the ODK Forums, you're in great hands here especially being a Model 45 owner.
Now the next first thing is "SOS", which stands for "Save Our Scotties" as regardless in what state they are in they are salvageable (unless they've been dropped from a great height or had a truck drive over it) and if you are not the one to do this then your other option would be to pass it on to someone that will.
Now from that statement you can probably see where I'm coming from, BTW I don't bite, but I'll call a spade a spade and not a shovel.
Your machine is in perfectly salvageable condition and can be as good if not better than your previously loaned Rover version of the same.
Don't despair over the broken blade in the reel as this can be easily repaired by a competent welder or engineer that works on these types of reels all the time.
Your power plant will probably require a good internal clean out in the carby and then be a reliable unit once more. You'll probably find that your needle and seat is clogged up with fuel deposits and also your jets.
All in all your machine is a bit of a Heinz variety, meaning that it's been made up from a few different machines by previous tennants but rest assured they are all basically the same when you strip their paint off.
I guess how this all turns out comes down to what you want to do and what result you want to achieve.
Once you've given us some idea as to what you'd like to do then we'll progress from there and give you some good advice.
Cheers,
BB.
