[ron]

Hi Richard,
A good indication or at least a quick one is to count the links of the track on both sides to see how many if any have been removed to take up the slack for the wear,by the look of the track its very unlikely that it will free up but you never know, when you get it home see if you can tow it a short distance, that may free it up, but if it is badly worn and the sprockets are worn, yes it will throw its track either at speed or on a turn,first thing first count the number of links,if its cheap enough buy it, then you have the rest of your life to restore it,every hour you put into it is in memory of your Grandfather,and you can be rightly proud of your acheivement,
Good luck, Regards Ron