Hi Alvini,
not trying to hijack this thread but as this about newbs and FF's....I am just completing my first major rebuild (new pull start, new spurs, clutch bell, bearings etc)and wanted to ask you a question regarding fitting small pieces of fuel line in the diff cups. I tried this last night and now the dogbones have positive pressure applied to the wheel bearing all the time rather than the sloppy fit of standard set-up. Before I run it, could this cause any other issues i.e bearing failure/stress? I'm pretty sure I got the spur gear spacing right, some say use paper, some say use the plastic from a part. What is good?
Hope you all had a great Xmas

Regards from down under.

Chris