Righto chaps, after checking around - Here's the course of action I have taken

1) put down a $50 deposit on a 4 stroke Rover with Briggs&Stratton motor -reconditioned from mower shop

2) decided to pull down the engine to bare parts again - rings, and new seals (top & bottom).

Should be an interesting journey.

Also - it's recycling "junk" week on our suburb at the moment! Yay.

Picked up a non-working Ryobi Whippersnipper (fuel lines perished & starter clutch a bit hammered)

Also a briggs & stratton 4 stroke Rover mower (not working - no spark).

So it should give me PLENTY of small machines to practice on wink