[Roadsters] what has happened???

[Oliver]

http://www.youtube.com/watch?v=ZNl5WWL_qI0

in the first video, taken almost a  year ago, the car is running happily. 
it ran like that for a month or so as i started to assemble wiring, etc, 
then gradually got worse and worse.

http://www.youtube.com/watch?v=ItPnNEhYb7E

tonight i checked the compression.  0, 0, 90, 120

yeah.  checked it twice.

so, what do you suggest?  i know that if i put oil in the cylinder, that 
will pinpoint it being rings.  but is that likely?  someone suggested head 
gasket.  i checked the oil, and at least the dipstick oil is still honey 
colored and nice.

anyone want to guide me on the next steps?

thanks . . .