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So about 3 months ago i bought a gsr y80 non lsd trans with fresh carbon syncros installed 1st-5th its neved given me a problem until recently popping out of 4th it goes in to gear but doesnt feel solid like its all the way in but it goes in catches and pops out everytime but wen i pull it far back as it can go and hold it with my hand it wont pop out itll try but not pop out low rpm it stays in gear for the most part just wondering if this could b caused bc of syncros or the shift linkage is bad or somthing i have no clue could someone help me out!!