That's where the turnbuckles come in! Will thread both ends of a sliced height sensor arm and turnbuckle it up. Will have wax paper over the lot to protect the threads and turnbuckle.
The spacers are easily a DIY if your good on a welder and can get them cut yourself.
The pins were turned up on a lathe and milled down on a milling machine. Took all of 2hrs to make them all up.

