mt82

hi i am getting such bad 3rd gear lock out on my 2017 gt. it's been fine but all of a sudden it's been a pain to get into 3rd. shifter goes into 3rd fine when car is off. the gear does not grind whatsoever when driving just hit or miss if i'll be able to go into 3rd. can also down shift into 3rd...

Does anyone have the gear grinding sound on their mt82 when shifting from 2nd to 3rd? I am having this issue when shifting at 5000rpm or maybe 4500 rpm and higher. And also the shifter vibrates a lot when on idle. I hadn't experienced any of the above issues on the manual golf or camaro I drove...