David,
Forget all about Steamech, especially his plans and laser cut parts for the twin cylinder engine.
I have been chasing him for a couple of years, trying to get a critical missing dimension on the plans.
He is in fact still sending out the bad plans and taking Paypal payments, and I even got a chappie local to him to see why he never answers his emails.
Basically, his wife said he just can’t be bothered.
When eventually I get fit, I will make up a case for Paypal to take action and stop him selling defective goods.
Bogs