The machine shop will be able to figure out if it can be milled again. You can look in the manual for the #.
https://www.cruisercult.com/factory-service-manuals
Yep I was a volunteer for the draft Regular Army 34 Signal Battalion out of Ludwigsburg in the mid 70's. I did learn to fly on J3 Cub, never had the overwhelming desire to jump from a perfectly good working plane, but I sure look up to those that do.
Wow what a sharp looking rig! Love that front plate. Thank you for your service. My nephew was 82nd. As a kid, my dad's best friend's son was 101st Green Beret.
It sounds like a minute is way more than enough. I'm at 4000 and when its -25 the local diesels don't want to start unless they are plugged in. I usually plug my stuff in for at least 3 hours when its that cold.
How cold is it? How worn is your engine? Are all your glow plugs working correctly? I would guess like a minute - see if it wants to start. No then add another half minute and try again.
I set my valves on the loose side of spec's - better to hear them than burn them.
If your hubs are in and you are in 4H you will feel it when making a full turn up against steering locks vs 2H. Put it in 4H and jack up each front tire one at a time and see if it turns with the tranny in gear...
Water in the gas make them run poorly, so does old gas. Add some gas dryer, even better transfer it out and use for start camp fires. Warm days, cold nights will condense water into you tank - keeping it full helps stop that.
The opening is the crank case vent, on mine it connects to the...
There is a diesel section around somewhere , maybe someone posted pic's of their engine. Not really a diesel guy myself but I was very found of my M35A2 multi-fueler - big motor with the wacko transmission.
Places that have those pull out boxes of nuts/bolts/connectors usually have a box or two with small springs ace hardware for example.
Home Despot Everbilt Spring Assortment, Spring Steel Construction, Nickel-Plated, 20 Extension Springs, 64 Compression Springs, (1-Pack) SP 9901 - The Home Depot...
Most hardware stores have a spring assortment kit. Take yours there and match it as close as you can for diameters etc., you can cut it to length with good dykes or a Dremel tool with a cut off wheel.