Troybilt ltx 1842 problems

Hello, New to the forum Here. Name is Bryan. Im having trouble diagnosing a problem with my Troybilt LTX 1842. A Little Background. Last year the Drive belt from the motor to the rearend broke. I replaced it and ever since I have had the problem of the Little belt in the back coming off under strain. By that I mean going up a hill, doesnt do it all the time but I had to jump off it last year and had it slam into my building. I have checked the routing of the drive belt numerous times, thinking I had it on wrong, It seems to be on the right route. Also the thing wont go out of gear. when I let off the pedal the mower slows but will not stop. Any Ideas on what else I should look for? This is a great mower, but I am at My wits end with it.





I have it up on jack stands and noticed when I turn the crank pulley the drive belt will turn as does the small belt over the rear end. To me it should not turn till I depress the pedal. Im thinking it is almost like the drive belt is too short, But Have tried one size bigger belt than what it should take, and it is too long and wont engage. It is almost like I need a Half size bigger, but they dont make one.



Thanks.