Hi all, I have a 763 which I have now completed all the repairs including adding a roof flashing unit, indicators and hazard light switch, air con fully working, seat replaced, door glass replaced and window wiper fully replaced as well as the door latch working 100%. Okay now down to it, when the machine is going forward, the right hand lever allows a squealing noise. the machine proceeds forwards okay with the left in a straight line without squealing. Any ideas? I did adjust the levers in an effort to prevent the left hand one catching the air con unit but ended up putting it back as it hit the door glass before reaching the end of its run.