You can try removing the field tube, if it’s possible.
When I owned my own business I had a 4x4 GMC Safari work van. Nice little van, I got it from the used car guy I buy all my vehicles from. I went to check the oil, and found what I thought was the wrong size dipstick. So he ordered me a new one. I put the new one in and took it out to check the oil, (it was very very long), as I pulled it out it hit the chassis and sparks flew and it started to weld itself to the chassis! I immediately knew where the other half of the first dipstick was! Turned out the alternator/belt was over tightened, and the positive nut on the alternator was touching the chassis. The other half of the dipstick was still in the dipstick tube, at the the bottom of the pan! Glad we found it! Now I know why such a low mileage van went to the auction he buys at! Phew, that could have been worse! Van lasted for years, I sold it with my business.