pinion opinion

[RupertW]

Thanks all, that's been interesting to read, and certainly appreciate the point on the investment of time. I've got to a point in my life where I work out how many hours a job will take me, give myself an hourly rate, and then work out if it's actually 'cheaper' to either use new parts of pay someone else to do it properly!
Main reason I asked is that I have what I think is an unmatched axle and torque tube and have often wondered if it might do as an emergency backup if I put it together.