I have a leaking handbrake seal, caused by excessive play in the rear output shaft. The manual describes how to adjust the preload on the bearing, by adding or removing shims between the transfer box and the speedo housing. But this is done with the err... well, the other shaft, the one above the output shaft, removed. As I am not a skilled mechanic I am not too keen on ripping the transfer box to bits. Can I measure and adjust the preload with everything in place? Thanks.