Had the same issue on my 242. Lubed hood hinges with very small amounts of 75w90 in a small squirt can. Wiped everything down - even sprayed (carefully) a tiny amount of brake cleaner to clean up the job. Hood operates flawlessly, but a small gust of wind from the back side of the car will now close the hood. Even scarier is what might happen if the wind gets ahold of it from the front side. Couldn't keep the hood reliably open at car shows. So I improvised a hood prop that locks into place with a small clip - so the prop cannot come loose. Problem solved.