I am trying to get transmission information from someone who knows what they are talking about. I have a TRX 250 X. Not the EX. 1st, 2nd, and 3rd work properly. The machine can NOT be shifted into 4th or 5th under power of any kind. It will only shift into these gears after I let the machine roll for a bit then it will go in to them. After I do shift into the gears, it will go with no clutch slippage. Where would the problem be so I can fix this. I have to slow to about 50 mph to get 4th and about 60 to get fifth. Help me please! This machine tops out at 87 to 93 mph when working properly. Thanks in advance for any good advice that is given.