Alright so when I did my m50 swap I bolted up a zf trans to go along with it. Everything was smooth until a couple of days later I start to hear the infamous rattle in neutral, it pops out of gear into neutral at high rpm, I get a clunk when I step on the gas quickly or push in the clutch quickly, and I have gear whine in 1st gear. Those symptoms lead to not having working syncros in 2nd gear and for a broken transmission in general. After we swapped the new transmission, I began to experience the same symptoms in fear of another broken trans only after a couple of hours of driving it. The mechanic said he tested it for 2 days and they it should be 100% however I think it's broken, what are your guys' opinions? Btw I drove it without the 1st gear whine and after an hour it started too whine..