Timing belt tensioner (Reft or Light?)

[SVX ROO]

I followed all the good procedures to install the timing belt tensioner, compressing it and using the pin. Problem is I have more than one procedure and they are exact opposites! One says initially have tensioner with the pin in all the way to right (passanger side), but belt on move tensioner left (driver side) which is looser tension, then remove the pin. My plunger extended about 0.55" vs. 0.615 full extension. (MY wife says I'm not quite that small!!)

Only problem is I have another procedure that says first left and then right before removing pin. This would apply more tension or give shorter plunger extension.

Both above sources where of Subaru origin!

I consulted a third source, Chilton and it agreeed with the first procedure above.

OK gang, which is it?? URGENT, its going back together today!
Ken