I have problems shifting my TRX350 into reverse. I have to put a huge amount of pressure on the brake lever to get it to shift into reverse. Even then, sometimes, it won't take. The reverse light will be on, but it won't reverse until I depress the reverse button and pull the brake lever in again. Then it will usually engage. Sometimes it will engage and then dis-engage while I am backing. I suspect there is an adjustment needed, but without a shop manual I'm not sure how to go about it.

Any easy fixes available?