Hi again, a further fossick in the shed it has brought a decent rear guard to light... But: I would want to swap this for a similar condition front guard for a 51. if you are interested... let me know.
The tank... I took a carefully selected number of sharp blue metal stones from the side of the road, about a dozen or so, blocked off all holes in the tank after inserting them and some water, and had myself a very good shake rattle n roll session (enjoyed in isolation so I didn't get committed) and after a few goes the tank was closer to being ready for the next stage... cheaper way to start your job I suspect. just count the stones ya plonk in, and pray ya get the same number out... but if ya use too much neck oil during the dance routine.. ya might have more stones on exit. Enjoy.