hi all ..like the title says i have a 91 trx350d that wont shift up or down it stuck in 4th while driving …the shifter moves a little each way and there is some spring tention but it will not shift it seemed to be getting harder to shift befor it finally stuck i was just wondering anyone has had or heard of this problem..i have a service manual downloaded and was wondering if those pawls wear out? any help is great thanks in advance